White border around Firefox URL and Search bars
Themes, especially dark ones, do not always play nicely with Firefox. Except for Balanzan, all Bisigi themes have this small bug. Firefox's URL bar and search bar have a white border around them. I have included a screen shot of the bug.
When trying to find a fix, I was digging around in the gtkrc of Ambiance, the Ubuntu default theme, to find out why it wasn't affected. I found the following piece of code (including the comment) that fixes the problem:
# The following line hints to gecko (and possibly other applications)
# that the entry should be drawn transparently on the canvas.
# Without this, gecko will fill in the background of the entry.
I think this line of code should be added to all of your themes to make them even better than they already are. Thanks for such great work!