PR: Custom Color Choice (#38)

javascripts/discourse/components/class-adder.gjs

@@ -0,0 +1,12 @@
+import Component from "@glimmer/component";
+import { concat } from "@ember/helper";
+import { service } from "@ember/service";
+import htmlClass from "discourse/helpers/html-class";
+
+export default class ClassAdder extends Component {
+  @service customColor;
+
+  <template>
+    {{htmlClass (concat "custom-color-" this.customColor.color)}}
+  </template>
+}