sadpandajoe commented on code in PR #42910:
URL: https://github.com/apache/superset/pull/42910#discussion_r4303319937


##########
superset-frontend/plugins/plugin-chart-echarts/src/BigNumber/BigNumberPeriodOverPeriod/controlPanel.ts:
##########
@@ -100,21 +125,24 @@ const config: ControlPanelConfig = {
         ],
         [
           {
-            name: 'comparison_color_scheme',
+            name: 'increase_color',
             config: {
-              type: 'SelectControl',
-              label: t('color scheme for comparison'),
-              default: ColorSchemeEnum.Green,
-              renderTrigger: true,
-              choices: [
-                [ColorSchemeEnum.Green, 'Green for increase, red for 
decrease'],
-                [ColorSchemeEnum.Red, 'Red for increase, green for decrease'],
-              ],
-              visibility: ({ controls }) =>
-                controls?.comparison_color_enabled?.value === true,
+              ...comparisonColorControlConfig,
+              label: t('Color for increase'),

Review Comment:
   The old `SelectControl` gave screen-reader users a name from its label, but 
`ColorPickerControl` only sets `aria-label` from the `ariaLabel` prop and these 
two pickers don't pass one (the Gauge and Bullet controls do). Assistive tech 
will announce the color value rather than 'Color for increase' / 'Color for 
decrease'. Could `ariaLabel` be added to the shared config or per control?



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