Improved the unfocused look for file attachment captions.
Review Request #6177 — Created July 31, 2014 and submitted — Latest diff uploaded
The file attachment caption editors looked pretty bad when unfocused.
The red box shadow poked through the sides, just barely, which looked
bad. Instead, we now show a reddish background, making it clear that the
caption needs attention.
Edited a caption and changed focus. Saw the background. Clicked back and it
went back to normal.