get rid of the evil blue outlines

src/skins/vector/css/_components.scss

@@ -19,6 +19,7 @@
 @import "./matrix-react-sdk/views/dialogs/_EncryptedEventDialog.scss";
 @import "./matrix-react-sdk/views/dialogs/_SetDisplayNameDialog.scss";
 @import "./matrix-react-sdk/views/dialogs/_UnknownDeviceDialog.scss";
+@import "./matrix-react-sdk/views/elements/_AccessibleButton.scss";
 @import "./matrix-react-sdk/views/elements/_AddressSelector.scss";
 @import "./matrix-react-sdk/views/elements/_AddressTile.scss";
 @import "./matrix-react-sdk/views/elements/_DirectorySearchBox.scss";

src/skins/vector/css/matrix-react-sdk/views/elements/_AccessibleButton.scss

@@ -0,0 +1,21 @@
+/*
+Copyright 2017 Vector Creations 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_AccessibleButton:focus {
+    outline: 0;
+    filter: brightness(200%);
+}
+

src/skins/vector/css/matrix-react-sdk/views/rooms/_RoomTile.scss

@@ -156,7 +156,7 @@ limitations under the License.
 }
 
 .mx_RoomTile:focus {
-    outline: 0;
+    filter: none ! important;
     background-color: $roomtile-focused-bg-color;
 }