refs #98 Set color from theme color in lists

src/renderer/components/TimelineSpace/Contents/Lists.vue

@@ -3,7 +3,7 @@
   <div class="list-timeline" v-for="message in timeline" v-bind:key="message.id">
     <toot :message="message" v-on:update="updateToot"></toot>
   </div>
-  <div class="loading-card" v-loading="lazyLoading"></div>
+  <div class="loading-card" v-loading="lazyLoading" :element-loading-background="backgroundColor"></div>
 </div>
 </template>
 
@@ -18,7 +18,8 @@ export default {
   computed: {
     ...mapState({
       timeline: state => state.TimelineSpace.Contents.Lists.timeline,
-      lazyLoading: state => state.TimelineSpace.Contents.Lists.lazyLoading
+      lazyLoading: state => state.TimelineSpace.Contents.Lists.lazyLoading,
+      backgroundColor: state => state.App.theme.background_color
     })
   },
   created () {