s/themes/skins/g as we are always describing the whole UI layout here, whereas themes can sometimes just be small cosmetic tweaks (light-on-dark, dark-on-light etc)

skins/base/css/molecules/MessageTile.css

@@ -0,0 +1,26 @@
+/*
+Copyright 2015 OpenMarket Ltd
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+.mx_MessageTile {
+}
+
+.mx_MessageTile.sending {
+    color: #ddd;
+}
+
+.mx_MessageTile.not_sent {
+    color: #f11;
+}