diff --git a/scripts/render_dashboards.py b/scripts/render_dashboards.py
index bec895a..2b0af09 100644
--- a/scripts/render_dashboards.py
+++ b/scripts/render_dashboards.py
@@ -361,18 +361,6 @@ def table_panel(
 
 def pie_panel(panel_id, title, expr, grid):
     """Return a pie chart panel with readable namespace labels."""
-    palette = [
-        "#EF476F",
-        "#FFD166",
-        "#06D6A0",
-        "#118AB2",
-        "#073B4C",
-        "#F78C6B",
-        "#8EECF5",
-        "#E0FF4F",
-        "#B5179E",
-        "#52B788",
-    ]
     return {
         "id": panel_id,
         "type": "piechart",
@@ -380,28 +368,7 @@ def pie_panel(panel_id, title, expr, grid):
         "datasource": PROM_DS,
         "gridPos": grid,
         "targets": [{"expr": expr, "refId": "A", "legendFormat": "{{namespace}}"}],
-        "fieldConfig": {
-            "defaults": {
-                "unit": "percent",
-                "custom": {"gradientMode": "scheme"},
-                "color": {"mode": "palette-classic"},
-            },
-            "overrides": [
-                {
-                    "matcher": {"id": "byIndex", "options": idx},
-                    "properties": [
-                        {
-                            "id": "color",
-                            "value": {
-                                "mode": "fixed",
-                                "fixedColor": palette[idx % len(palette)],
-                            },
-                        }
-                    ],
-                }
-                for idx in range(10)
-            ],
-        },
+        "fieldConfig": {"defaults": {"unit": "percent"}, "overrides": []},
         "options": {
             "legend": {"displayMode": "list", "placement": "right"},
             "pieType": "pie",
@@ -482,7 +449,7 @@ def build_overview():
             thresholds = {
                 "mode": "absolute",
                 "steps": [
-                    {"color": "red", "value": None},
+                    {"color": "red", "value": 0},
                     {"color": "orange", "value": WORKER_TOTAL - 2},
                     {"color": "yellow", "value": WORKER_TOTAL - 1},
                     {"color": "green", "value": WORKER_TOTAL},
@@ -492,7 +459,7 @@ def build_overview():
             thresholds = {
                 "mode": "absolute",
                 "steps": [
-                    {"color": "red", "value": None},
+                    {"color": "red", "value": 0},
                     {"color": "green", "value": CONTROL_TOTAL},
                 ],
             }
@@ -500,7 +467,7 @@ def build_overview():
             thresholds = {
                 "mode": "absolute",
                 "steps": [
-                    {"color": "green", "value": None},
+                    {"color": "green", "value": 0},
                     {"color": "yellow", "value": 1},
                     {"color": "orange", "value": 2},
                     {"color": "red", "value": 3},
diff --git a/services/monitoring/dashboards/atlas-overview.json b/services/monitoring/dashboards/atlas-overview.json
index 8be7f9d..4481904 100644
--- a/services/monitoring/dashboards/atlas-overview.json
+++ b/services/monitoring/dashboards/atlas-overview.json
@@ -38,7 +38,7 @@
             "steps": [
               {
                 "color": "red",
-                "value": null
+                "value": 0
               },
               {
                 "color": "orange",
@@ -107,7 +107,7 @@
             "steps": [
               {
                 "color": "red",
-                "value": null
+                "value": 0
               },
               {
                 "color": "green",
@@ -168,7 +168,7 @@
             "steps": [
               {
                 "color": "green",
-                "value": null
+                "value": 0
               },
               {
                 "color": "yellow",
@@ -243,7 +243,7 @@
             "steps": [
               {
                 "color": "green",
-                "value": null
+                "value": 0
               },
               {
                 "color": "yellow",
@@ -318,7 +318,7 @@
             "steps": [
               {
                 "color": "green",
-                "value": null
+                "value": 0
               },
               {
                 "color": "yellow",
@@ -729,166 +729,9 @@
       ],
       "fieldConfig": {
         "defaults": {
-          "unit": "percent",
-          "custom": {
-            "gradientMode": "scheme"
-          },
-          "color": {
-            "mode": "palette-classic"
-          }
+          "unit": "percent"
         },
-        "overrides": [
-          {
-            "matcher": {
-              "id": "byIndex",
-              "options": 0
-            },
-            "properties": [
-              {
-                "id": "color",
-                "value": {
-                  "mode": "fixed",
-                  "fixedColor": "#EF476F"
-                }
-              }
-            ]
-          },
-          {
-            "matcher": {
-              "id": "byIndex",
-              "options": 1
-            },
-            "properties": [
-              {
-                "id": "color",
-                "value": {
-                  "mode": "fixed",
-                  "fixedColor": "#FFD166"
-                }
-              }
-            ]
-          },
-          {
-            "matcher": {
-              "id": "byIndex",
-              "options": 2
-            },
-            "properties": [
-              {
-                "id": "color",
-                "value": {
-                  "mode": "fixed",
-                  "fixedColor": "#06D6A0"
-                }
-              }
-            ]
-          },
-          {
-            "matcher": {
-              "id": "byIndex",
-              "options": 3
-            },
-            "properties": [
-              {
-                "id": "color",
-                "value": {
-                  "mode": "fixed",
-                  "fixedColor": "#118AB2"
-                }
-              }
-            ]
-          },
-          {
-            "matcher": {
-              "id": "byIndex",
-              "options": 4
-            },
-            "properties": [
-              {
-                "id": "color",
-                "value": {
-                  "mode": "fixed",
-                  "fixedColor": "#073B4C"
-                }
-              }
-            ]
-          },
-          {
-            "matcher": {
-              "id": "byIndex",
-              "options": 5
-            },
-            "properties": [
-              {
-                "id": "color",
-                "value": {
-                  "mode": "fixed",
-                  "fixedColor": "#F78C6B"
-                }
-              }
-            ]
-          },
-          {
-            "matcher": {
-              "id": "byIndex",
-              "options": 6
-            },
-            "properties": [
-              {
-                "id": "color",
-                "value": {
-                  "mode": "fixed",
-                  "fixedColor": "#8EECF5"
-                }
-              }
-            ]
-          },
-          {
-            "matcher": {
-              "id": "byIndex",
-              "options": 7
-            },
-            "properties": [
-              {
-                "id": "color",
-                "value": {
-                  "mode": "fixed",
-                  "fixedColor": "#E0FF4F"
-                }
-              }
-            ]
-          },
-          {
-            "matcher": {
-              "id": "byIndex",
-              "options": 8
-            },
-            "properties": [
-              {
-                "id": "color",
-                "value": {
-                  "mode": "fixed",
-                  "fixedColor": "#B5179E"
-                }
-              }
-            ]
-          },
-          {
-            "matcher": {
-              "id": "byIndex",
-              "options": 9
-            },
-            "properties": [
-              {
-                "id": "color",
-                "value": {
-                  "mode": "fixed",
-                  "fixedColor": "#52B788"
-                }
-              }
-            ]
-          }
-        ]
+        "overrides": []
       },
       "options": {
         "legend": {
@@ -928,166 +771,9 @@
       ],
       "fieldConfig": {
         "defaults": {
-          "unit": "percent",
-          "custom": {
-            "gradientMode": "scheme"
-          },
-          "color": {
-            "mode": "palette-classic"
-          }
+          "unit": "percent"
         },
-        "overrides": [
-          {
-            "matcher": {
-              "id": "byIndex",
-              "options": 0
-            },
-            "properties": [
-              {
-                "id": "color",
-                "value": {
-                  "mode": "fixed",
-                  "fixedColor": "#EF476F"
-                }
-              }
-            ]
-          },
-          {
-            "matcher": {
-              "id": "byIndex",
-              "options": 1
-            },
-            "properties": [
-              {
-                "id": "color",
-                "value": {
-                  "mode": "fixed",
-                  "fixedColor": "#FFD166"
-                }
-              }
-            ]
-          },
-          {
-            "matcher": {
-              "id": "byIndex",
-              "options": 2
-            },
-            "properties": [
-              {
-                "id": "color",
-                "value": {
-                  "mode": "fixed",
-                  "fixedColor": "#06D6A0"
-                }
-              }
-            ]
-          },
-          {
-            "matcher": {
-              "id": "byIndex",
-              "options": 3
-            },
-            "properties": [
-              {
-                "id": "color",
-                "value": {
-                  "mode": "fixed",
-                  "fixedColor": "#118AB2"
-                }
-              }
-            ]
-          },
-          {
-            "matcher": {
-              "id": "byIndex",
-              "options": 4
-            },
-            "properties": [
-              {
-                "id": "color",
-                "value": {
-                  "mode": "fixed",
-                  "fixedColor": "#073B4C"
-                }
-              }
-            ]
-          },
-          {
-            "matcher": {
-              "id": "byIndex",
-              "options": 5
-            },
-            "properties": [
-              {
-                "id": "color",
-                "value": {
-                  "mode": "fixed",
-                  "fixedColor": "#F78C6B"
-                }
-              }
-            ]
-          },
-          {
-            "matcher": {
-              "id": "byIndex",
-              "options": 6
-            },
-            "properties": [
-              {
-                "id": "color",
-                "value": {
-                  "mode": "fixed",
-                  "fixedColor": "#8EECF5"
-                }
-              }
-            ]
-          },
-          {
-            "matcher": {
-              "id": "byIndex",
-              "options": 7
-            },
-            "properties": [
-              {
-                "id": "color",
-                "value": {
-                  "mode": "fixed",
-                  "fixedColor": "#E0FF4F"
-                }
-              }
-            ]
-          },
-          {
-            "matcher": {
-              "id": "byIndex",
-              "options": 8
-            },
-            "properties": [
-              {
-                "id": "color",
-                "value": {
-                  "mode": "fixed",
-                  "fixedColor": "#B5179E"
-                }
-              }
-            ]
-          },
-          {
-            "matcher": {
-              "id": "byIndex",
-              "options": 9
-            },
-            "properties": [
-              {
-                "id": "color",
-                "value": {
-                  "mode": "fixed",
-                  "fixedColor": "#52B788"
-                }
-              }
-            ]
-          }
-        ]
+        "overrides": []
       },
       "options": {
         "legend": {
diff --git a/services/monitoring/grafana-dashboard-overview.yaml b/services/monitoring/grafana-dashboard-overview.yaml
index 06a40c7..926c71c 100644
--- a/services/monitoring/grafana-dashboard-overview.yaml
+++ b/services/monitoring/grafana-dashboard-overview.yaml
@@ -47,7 +47,7 @@ data:
                 "steps": [
                   {
                     "color": "red",
-                    "value": null
+                    "value": 0
                   },
                   {
                     "color": "orange",
@@ -116,7 +116,7 @@ data:
                 "steps": [
                   {
                     "color": "red",
-                    "value": null
+                    "value": 0
                   },
                   {
                     "color": "green",
@@ -177,7 +177,7 @@ data:
                 "steps": [
                   {
                     "color": "green",
-                    "value": null
+                    "value": 0
                   },
                   {
                     "color": "yellow",
@@ -252,7 +252,7 @@ data:
                 "steps": [
                   {
                     "color": "green",
-                    "value": null
+                    "value": 0
                   },
                   {
                     "color": "yellow",
@@ -327,7 +327,7 @@ data:
                 "steps": [
                   {
                     "color": "green",
-                    "value": null
+                    "value": 0
                   },
                   {
                     "color": "yellow",
@@ -738,166 +738,9 @@ data:
           ],
           "fieldConfig": {
             "defaults": {
-              "unit": "percent",
-              "custom": {
-                "gradientMode": "scheme"
-              },
-              "color": {
-                "mode": "palette-classic"
-              }
+              "unit": "percent"
             },
-            "overrides": [
-              {
-                "matcher": {
-                  "id": "byIndex",
-                  "options": 0
-                },
-                "properties": [
-                  {
-                    "id": "color",
-                    "value": {
-                      "mode": "fixed",
-                      "fixedColor": "#EF476F"
-                    }
-                  }
-                ]
-              },
-              {
-                "matcher": {
-                  "id": "byIndex",
-                  "options": 1
-                },
-                "properties": [
-                  {
-                    "id": "color",
-                    "value": {
-                      "mode": "fixed",
-                      "fixedColor": "#FFD166"
-                    }
-                  }
-                ]
-              },
-              {
-                "matcher": {
-                  "id": "byIndex",
-                  "options": 2
-                },
-                "properties": [
-                  {
-                    "id": "color",
-                    "value": {
-                      "mode": "fixed",
-                      "fixedColor": "#06D6A0"
-                    }
-                  }
-                ]
-              },
-              {
-                "matcher": {
-                  "id": "byIndex",
-                  "options": 3
-                },
-                "properties": [
-                  {
-                    "id": "color",
-                    "value": {
-                      "mode": "fixed",
-                      "fixedColor": "#118AB2"
-                    }
-                  }
-                ]
-              },
-              {
-                "matcher": {
-                  "id": "byIndex",
-                  "options": 4
-                },
-                "properties": [
-                  {
-                    "id": "color",
-                    "value": {
-                      "mode": "fixed",
-                      "fixedColor": "#073B4C"
-                    }
-                  }
-                ]
-              },
-              {
-                "matcher": {
-                  "id": "byIndex",
-                  "options": 5
-                },
-                "properties": [
-                  {
-                    "id": "color",
-                    "value": {
-                      "mode": "fixed",
-                      "fixedColor": "#F78C6B"
-                    }
-                  }
-                ]
-              },
-              {
-                "matcher": {
-                  "id": "byIndex",
-                  "options": 6
-                },
-                "properties": [
-                  {
-                    "id": "color",
-                    "value": {
-                      "mode": "fixed",
-                      "fixedColor": "#8EECF5"
-                    }
-                  }
-                ]
-              },
-              {
-                "matcher": {
-                  "id": "byIndex",
-                  "options": 7
-                },
-                "properties": [
-                  {
-                    "id": "color",
-                    "value": {
-                      "mode": "fixed",
-                      "fixedColor": "#E0FF4F"
-                    }
-                  }
-                ]
-              },
-              {
-                "matcher": {
-                  "id": "byIndex",
-                  "options": 8
-                },
-                "properties": [
-                  {
-                    "id": "color",
-                    "value": {
-                      "mode": "fixed",
-                      "fixedColor": "#B5179E"
-                    }
-                  }
-                ]
-              },
-              {
-                "matcher": {
-                  "id": "byIndex",
-                  "options": 9
-                },
-                "properties": [
-                  {
-                    "id": "color",
-                    "value": {
-                      "mode": "fixed",
-                      "fixedColor": "#52B788"
-                    }
-                  }
-                ]
-              }
-            ]
+            "overrides": []
           },
           "options": {
             "legend": {
@@ -937,166 +780,9 @@ data:
           ],
           "fieldConfig": {
             "defaults": {
-              "unit": "percent",
-              "custom": {
-                "gradientMode": "scheme"
-              },
-              "color": {
-                "mode": "palette-classic"
-              }
+              "unit": "percent"
             },
-            "overrides": [
-              {
-                "matcher": {
-                  "id": "byIndex",
-                  "options": 0
-                },
-                "properties": [
-                  {
-                    "id": "color",
-                    "value": {
-                      "mode": "fixed",
-                      "fixedColor": "#EF476F"
-                    }
-                  }
-                ]
-              },
-              {
-                "matcher": {
-                  "id": "byIndex",
-                  "options": 1
-                },
-                "properties": [
-                  {
-                    "id": "color",
-                    "value": {
-                      "mode": "fixed",
-                      "fixedColor": "#FFD166"
-                    }
-                  }
-                ]
-              },
-              {
-                "matcher": {
-                  "id": "byIndex",
-                  "options": 2
-                },
-                "properties": [
-                  {
-                    "id": "color",
-                    "value": {
-                      "mode": "fixed",
-                      "fixedColor": "#06D6A0"
-                    }
-                  }
-                ]
-              },
-              {
-                "matcher": {
-                  "id": "byIndex",
-                  "options": 3
-                },
-                "properties": [
-                  {
-                    "id": "color",
-                    "value": {
-                      "mode": "fixed",
-                      "fixedColor": "#118AB2"
-                    }
-                  }
-                ]
-              },
-              {
-                "matcher": {
-                  "id": "byIndex",
-                  "options": 4
-                },
-                "properties": [
-                  {
-                    "id": "color",
-                    "value": {
-                      "mode": "fixed",
-                      "fixedColor": "#073B4C"
-                    }
-                  }
-                ]
-              },
-              {
-                "matcher": {
-                  "id": "byIndex",
-                  "options": 5
-                },
-                "properties": [
-                  {
-                    "id": "color",
-                    "value": {
-                      "mode": "fixed",
-                      "fixedColor": "#F78C6B"
-                    }
-                  }
-                ]
-              },
-              {
-                "matcher": {
-                  "id": "byIndex",
-                  "options": 6
-                },
-                "properties": [
-                  {
-                    "id": "color",
-                    "value": {
-                      "mode": "fixed",
-                      "fixedColor": "#8EECF5"
-                    }
-                  }
-                ]
-              },
-              {
-                "matcher": {
-                  "id": "byIndex",
-                  "options": 7
-                },
-                "properties": [
-                  {
-                    "id": "color",
-                    "value": {
-                      "mode": "fixed",
-                      "fixedColor": "#E0FF4F"
-                    }
-                  }
-                ]
-              },
-              {
-                "matcher": {
-                  "id": "byIndex",
-                  "options": 8
-                },
-                "properties": [
-                  {
-                    "id": "color",
-                    "value": {
-                      "mode": "fixed",
-                      "fixedColor": "#B5179E"
-                    }
-                  }
-                ]
-              },
-              {
-                "matcher": {
-                  "id": "byIndex",
-                  "options": 9
-                },
-                "properties": [
-                  {
-                    "id": "color",
-                    "value": {
-                      "mode": "fixed",
-                      "fixedColor": "#52B788"
-                    }
-                  }
-                ]
-              }
-            ]
+            "overrides": []
           },
           "options": {
             "legend": {