This is an interesting thread, as I am in the process of redesigning a GTK theme for Gnome. It is based off of the GlassyBleu theme used by HP for their Ubuntu based netbook theme. The theme itself is 98% complete, and the only thing I am not finished with is the wallpaper.
I called it GlassyMint, and it is a dark theme with some nice hints of green thrown in. I created a new menu button for MintMenu and have included it in the panel folder for people to manually add once the theme is installed.
Although I am pretty new at making themes, I feel this is a good starting point. I still have a long way to go for actually creating a full blown theme from scratch since I basically copied one already made; I feel personally that this looks good. I may need some help is getting rid of un-needed things that has to do with the netbook part of it, but then again it may be useful for those who wish to add the netbook remix packages on their systems. I don't know yet.
I will post some screenshots of it in the appropriate artwork thread later today, so my apologies if it seems like I hijacked this particular thread.
It's perfectly OK to express an opinion, but refrain from foul and stupid language