Merge pull request #7732 from tragiclifestories/gauge-color

Allow overriding colour in Gauge components

.changeset/grumpy-pugs-report.md

@@ -0,0 +1,23 @@
+---
+'@backstage/core-components': patch
+---
+
+Add new way to override color selection to progress bar/gauge components.
+
+`Gauge`, `LinearGauge` and `GaugeCard` all accept a `getColor` prop,
+which is a function of the type:
+
+```ts
+export type GaugePropsGetColor = (args: {
+  palette: Palette;
+  value: number;
+  inverse?: boolean;
+  max?: number;
+}) => string;
+```
+
+Return a standard CSS color string (e.g. "red", "#f02020"), and the gauge will
+be set to that color.
+
+If the prop is omitted, the default implementation is unchanged from previous
+versions.