Allow setting custom color for events in Vue

aleksis/core/frontend/components/calendar/BaseCalendarFeedDetails.vue

@@ -6,7 +6,7 @@
     offset-x
   >
     <v-card min-width="350px" flat>
-      <v-toolbar :color="selectedEvent.color" dark dense>
+      <v-toolbar :color="color || selectedEvent.color" dark dense>
         <v-toolbar-title>
           <slot name="title" :selected-event="selectedEvent">{{
             selectedEvent.name

aleksis/core/frontend/mixins/calendarFeedDetails.js

@@ -27,6 +27,11 @@ const calendarFeedDetailsMixin = {
       type: Boolean,
       default: false,
     },
+    color: {
+      required: false,
+      type: String,
+      default: null,
+    },
   },
   computed: {
     model: {