attempting to revert colors

Opened this PR as a POC to see whether/how we can make sequential color palettes work in dark mode, and it seems to work out of the box.

superset-frontend/packages/superset-ui-core/src/color/SequentialSchemeRegistrySingleton.ts

@@ -17,19 +17,50 @@
  * under the License.
  */
 
+import { themeObject } from '@superset-ui/core';
+import tinycolor from 'tinycolor2';
 import makeSingleton from '../utils/makeSingleton';
 import ColorSchemeRegistry from './ColorSchemeRegistry';
 import SequentialScheme from './SequentialScheme';
 import schemes from './colorSchemes/sequential/d3';
 
+function transformColor(color: string): string {
+  const tc = tinycolor(color);
+  if (!tc.isValid()) return color;
+
+  const hsl = tc.toHsl();
+  return tinycolor({
+    h: hsl.h,
+    s: hsl.s,
+    l: 1 - hsl.l,
+    a: hsl.a,
+  }).toHexString();
+}
+
+function themeAwareColors(colors: string[]): string[] {
+  if (!themeObject.isThemeDark()) {
+    return colors.map(c => tinycolor(c).toHexString());
+  }
+  return colors.map(transformColor);
+}
+
 class SequentialSchemeRegistry extends ColorSchemeRegistry<SequentialScheme> {
   constructor() {
     super();
+    schemes.forEach(s => this.registerValue(s.id, s));
+    this.setDefaultKey('SUPERSET_DEFAULT');
+  }
 
-    this.registerValue('SUPERSET_DEFAULT', schemes[0]);
+  override get(key: string): SequentialScheme {
+    const base = super.get(key);
+    if (!base) throw new Error(`Unknown sequential color scheme: ${key}`);
+
+    return new SequentialScheme({
+      ...base,
+      colors: themeAwareColors(base.colors),
+    });
   }
 }
 
 const getInstance = makeSingleton(SequentialSchemeRegistry);
-
 export default getInstance;

superset-frontend/packages/superset-ui-core/src/color/colorSchemes/sequential/common.ts

@@ -23,7 +23,7 @@ const schemes = [
   {
     id: 'blue_white_yellow',
     label: 'blue/white/yellow',
-    colors: ['#00d1c1', 'white', '#ffb400'],
+    colors: ['#00d1c1', '#ffffff', '#ffb400'],
   },
   {
     id: 'fire',