remove.png and add.png are 16x16 at the moment (added in r56032). I think both icons may look nicer if they were a tiny bit smaller. I'm guessing 12x12 for add.png and 14x14 for remove.png. If this change would be made, the css will probably also have to be changed (see save rev for changes).
The icons do not appear to be sourced. Are they PD, or were they created by the committer?
Version: 1.16.x
Severity: enhancement