Fix Bug 1482404 - remove unnecessary search background-color
Fix Bug 1482404 - remove unnecessary search background-color

rlr/activity-streams,rlr/activity-streams,rlr/activity-streams,rlr/activity-streams,AdamHillier/activity-stream,Mardak/activity-stream,mozilla/activity-streams,Mardak/activity-stream,mozilla/activity-streams,AdamHillier/activity-stream,mozilla/activity-stream,sarracini/activity-stream,Mardak/activity-stream,sarracini/activity-stream,mozilla/activity-stream,AdamHillier/activity-stream,sarracini/activity-stream,AdamHillier/activity-stream,Mardak/activity-stream,mozilla/activity-stream,mozilla/activity-stream,sarracini/activity-stream