This doesn't work for me :( I have the "Better GMail 2" extension installed in Firefox, and it offers (crappier) attachment icons. I turned these off, but it looks like it's still over-riding it. A LOT of people use that, so perhaps you want to figure out how to make it compatible!!
Excellent script. I like to use Gmail a lot, but it's been difficult to keep the aesthetic cohesive with the rest of my system. Works well with my Ubuntu distribution.
Simcoe said about Gmail 2 - native OS attachment icons on Aug 08 2008
skittleys said about Gmail 2 - native OS attachment icons on Mar 26 2008
Alec said about Gmail 2 - native OS attachment icons on Mar 04 2008