philc/vimium — comment on commit a26c50d33493782ec6cb19cbec9c12e5e48a0f8f
File:  line 0
By philc:

Interesting. I'm curious to see how this looks; I'll give it a shot soon. For buttons which have the default OS styling (particularly on OSX), changing the border like that may look pretty bad. When you set the border on a button which is styled by the OS, the entire button changes.