Set section-specific colors for icons

src/plugins/roomslist/styles/roomsgroups.scss

@@ -16,6 +16,10 @@
             display: block;
             margin-bottom: 0.5em;
 
+            svg {
+                fill: var(--chatroom-head-fg-color);
+            }
+
             .list-item {
                 padding-top: 0;
                 padding-bottom: 0;

src/plugins/rosterview/styles/roster.scss

@@ -23,6 +23,10 @@
         margin: 0;
         padding: 0;
 
+        svg {
+            fill: var(--chat-color);
+        }
+
         .roster-contacts {
             padding: 0;
             margin: 0 0 0.2em 0;