ClickStack Demo Day (29/05/2026) - New datasource selector and color picking for series

Two UI improvements from Alex. First, the datasource selector has been cleaned up: clicking on it now only shows datasources to pick from, while management actions (view schema, create new source) are moved into a separate kebab menu. This separates selection from configuration, something that's been on the list for a while.

Second, number tiles now have a static color picker so you can assign a specific color to a metric. Conditional color rules — turning red, green, or yellow based on thresholds — are also in progress. Once Elizabet's unified palette PR lands, both will use properly named colors instead of the current "color 1, 2, 3" labels.

Part of the ClickStack Demo Day series. See the full post at https://clickhouse.com/docs/use-cases/observability/clickstack/demo-days/2026/2026-05-29

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