I've just given sublime text a shot, yet those custom rounded UI elements don't mix well with the rest of my setup.<p>Not much pertinence came up googling, yet I can't imagine being the sole icewm/gtk2-redmond afficionado out there.<p>(It not existing, I might get to hack one together)
You're likely going to need to put one together. I use Seti_UI. At least it's not rounded but I assume it won't work too well with that gtk theme.