This is the one I modded and am using for 1.5:

Basically, I have used the icons from this theme:
http://www.deviantart.com/view/10429888/And used this theme to tie it together, since its css files pretty much lined up perfect:
http://www.neowin.net/forum/index.php?showtopic=345076I changed much of the 2nd theme to be the same as the default firefox theme, although some things aren't as perfect as I want them, and I haven't done everything I wanted to do yet, maybe for another day. It could possibly be created to have those blueish icons like in the one above, but unlike the source theme for the icons, the modded theme didn't support the smaller icons option as a work around for changing the icon colours, but it wouldn't be too hard to do I don't think.
I could upload this somewhere for you guys or attach it, but I'm not sure what the deal is with permissions and crap, or if it's just cool to make it available to people. Alternatively, I can email it I guess.
Just as a side note, I had no prior experience with firefox themes, I just mashed my way through it really, and the DOMi was really helpful.