Update CSS

stylesheets/manifest.css

@@ -1536,12 +1536,16 @@ li.entry .error-icon-container {
       background-color: silver;
       height: 100%;
       width: 100%; }
+    .discussion-container .scroll-down-button-view button .icon:hover {
+      background-color: #616161; }
     .discussion-container .scroll-down-button-view button.new-messages {
       background-color: #2090ea; }
       .discussion-container .scroll-down-button-view button.new-messages .icon {
         -webkit-mask: url("/images/down.svg") no-repeat center;
         -webkit-mask-size: 100%;
         background-color: white; }
+      .discussion-container .scroll-down-button-view button.new-messages:hover {
+        background-color: #1472bd; }
 
 .ios #header {
   height: 64px;
@@ -2157,11 +2161,15 @@ li.entry .error-icon-container {
       -webkit-mask: url("/images/down.svg") no-repeat center;
       -webkit-mask-size: 100%;
       background-color: black; }
+    .android-dark .discussion-container .scroll-down-button-view button .icon:hover {
+      background-color: white; }
     .android-dark .discussion-container .scroll-down-button-view button.new-messages {
       background-color: #2090ea; }
       .android-dark .discussion-container .scroll-down-button-view button.new-messages .icon {
         -webkit-mask: url("/images/down.svg") no-repeat center;
         -webkit-mask-size: 100%;
         background-color: white; }
+      .android-dark .discussion-container .scroll-down-button-view button.new-messages:hover {
+        background-color: #1472bd; }
 
 /*# sourceMappingURL=manifest.css.map */