Add maps for all colors, document how to extend color utilities

scss/_functions.scss

@@ -55,6 +55,16 @@
   @return $result;
 }
 
+// Merge multiple maps
+@function map-merge-multiple($maps...) {
+  $merged-maps: ();
+
+  @each $map in $maps {
+    $merged-maps: map-merge($merged-maps, $map);
+  }
+  @return $merged-maps;
+}
+
 // Replace `$search` with `$replace` in `$string`
 // Used on our SVG icon backgrounds for custom forms.
 //

scss/_variables.scss

@@ -198,6 +198,126 @@ $cyan-600: shade-color($cyan, 20%) !default;
 $cyan-700: shade-color($cyan, 40%) !default;
 $cyan-800: shade-color($cyan, 60%) !default;
 $cyan-900: shade-color($cyan, 80%) !default;
+
+$blues: (
+  "blue-100": $blue-100,
+  "blue-200": $blue-200,
+  "blue-300": $blue-300,
+  "blue-400": $blue-400,
+  "blue-500": $blue-500,
+  "blue-600": $blue-600,
+  "blue-700": $blue-700,
+  "blue-800": $blue-800,
+  "blue-900": $blue-900
+) !default;
+
+$indigos: (
+  "indigo-100": $indigo-100,
+  "indigo-200": $indigo-200,
+  "indigo-300": $indigo-300,
+  "indigo-400": $indigo-400,
+  "indigo-500": $indigo-500,
+  "indigo-600": $indigo-600,
+  "indigo-700": $indigo-700,
+  "indigo-800": $indigo-800,
+  "indigo-900": $indigo-900
+) !default;
+
+$purples: (
+  "purple-100": $purple-200,
+  "purple-200": $purple-100,
+  "purple-300": $purple-300,
+  "purple-400": $purple-400,
+  "purple-500": $purple-500,
+  "purple-600": $purple-600,
+  "purple-700": $purple-700,
+  "purple-800": $purple-800,
+  "purple-900": $purple-900
+) !default;
+
+$pinks: (
+  "pink-100": $pink-100,
+  "pink-200": $pink-200,
+  "pink-300": $pink-300,
+  "pink-400": $pink-400,
+  "pink-500": $pink-500,
+  "pink-600": $pink-600,
+  "pink-700": $pink-700,
+  "pink-800": $pink-800,
+  "pink-900": $pink-900
+) !default;
+
+$reds: (
+  "red-100": $red-100,
+  "red-200": $red-200,
+  "red-300": $red-300,
+  "red-400": $red-400,
+  "red-500": $red-500,
+  "red-600": $red-600,
+  "red-700": $red-700,
+  "red-800": $red-800,
+  "red-900": $red-900
+) !default;
+
+$oranges: (
+  "orange-100": $orange-100,
+  "orange-200": $orange-200,
+  "orange-300": $orange-300,
+  "orange-400": $orange-400,
+  "orange-500": $orange-500,
+  "orange-600": $orange-600,
+  "orange-700": $orange-700,
+  "orange-800": $orange-800,
+  "orange-900": $orange-900
+) !default;
+
+$yellows: (
+  "yellow-100": $yellow-100,
+  "yellow-200": $yellow-200,
+  "yellow-300": $yellow-300,
+  "yellow-400": $yellow-400,
+  "yellow-500": $yellow-500,
+  "yellow-600": $yellow-600,
+  "yellow-700": $yellow-700,
+  "yellow-800": $yellow-800,
+  "yellow-900": $yellow-900
+) !default;
+
+$greens: (
+  "green-100": $green-100,
+  "green-200": $green-200,
+  "green-300": $green-300,
+  "green-400": $green-400,
+  "green-500": $green-500,
+  "green-600": $green-600,
+  "green-700": $green-700,
+  "green-800": $green-800,
+  "green-900": $green-900
+) !default;
+
+$teals: (
+  "teal-100": $teal-100,
+  "teal-200": $teal-200,
+  "teal-300": $teal-300,
+  "teal-400": $teal-400,
+  "teal-500": $teal-500,
+  "teal-600": $teal-600,
+  "teal-700": $teal-700,
+  "teal-800": $teal-800,
+  "teal-900": $teal-900
+) !default;
+
+$cyans: (
+  "cyan-100": $cyan-100,
+  "cyan-200": $cyan-200,
+  "cyan-300": $cyan-300,
+  "cyan-400": $cyan-400,
+  "cyan-500": $cyan-500,
+  "cyan-600": $cyan-600,
+  "cyan-700": $cyan-700,
+  "cyan-800": $cyan-800,
+  "cyan-900": $cyan-900
+) !default;
 // fusv-enable
 
 // Characters which are escaped by the escape-svg function

site/content/docs/5.0/customize/color.md

@@ -106,3 +106,45 @@ Here's how you can use these in your Sass:
 ```
 
 [Color]({{< docsref "/utilities/colors" >}}) and [background]({{< docsref "/utilities/background" >}}) utility classes are also available for setting `color` and `background-color` using the `500` color values.
+
+## Generating utilities
+
+<small class="d-inline-flex px-2 py-1 font-monospace text-muted border rounded-3">Added in v5.1.0</small>
+
+Bootstrap doesn't include `color` and `background-color` utilities for every color variable, but you can generate these yourself with our [utility API]({{< docsref "/utilities/api" >}}) and our extended Sass maps added in v5.1.0.
+
+1. To start, make sure you've imported our functions, variables, mixins, and utilities.
+2. Use our `combo-map()` function to quickly merge multiple Sass maps together in a new map.
+3. Merge this new combined map to extend any utility with a `{color}-{level}` class name.
+
+Here's an example that generates text color utilities (e.g., `.text-purple-500`) using the above steps.
+
+```scss
+@import "bootstrap/scss/functions";
+@import "bootstrap/scss/variables";
+@import "bootstrap/scss/mixins";
+@import "bootstrap/scss/utilities";
+
+$all-colors: map-merge-multiple($blues, $indigos, $purples, $pinks, $reds, $oranges, $yellows, $greens, $teals, $cyans);
+
+$utilities: map-merge(
+  $utilities,
+  (
+    "color": map-merge(
+      map-get($utilities, "color"),
+      (
+        values: map-merge(
+          map-get(map-get($utilities, "color"), "values"),
+          (
+            $all-colors
+          ),
+        ),
+      ),
+    ),
+  )
+);
+
+@import "bootstrap/scss/utilities/api";
+```
+
+This will generate new `.text-{color}-{level}` utilities for every color and level. You can do the same for any other utility and property as well.