Update widget colors based on the widgetConfig (#276)

app/javascript/widget/store/modules/appConfig.js

@@ -0,0 +1,29 @@
+import { SET_WIDGET_COLOR } from '../types';
+
+const state = {
+  widgetColor: '',
+};
+
+const getters = {
+  getWidgetColor: $state => $state.widgetColor,
+};
+
+const actions = {
+  setWidgetColor({ commit }, data) {
+    commit(SET_WIDGET_COLOR, data);
+  },
+};
+
+const mutations = {
+  [SET_WIDGET_COLOR]($state, data) {
+    $state.widgetColor = data.widget_color;
+  },
+};
+
+export default {
+  namespaced: true,
+  state,
+  getters,
+  actions,
+  mutations,
+};