Oh, that's my WinAMP toolbar plugin FOR Archicad. Sorry.
j/k
Yeah that's AC 12 build 2350 or 2450 or something (I forget), running the default windows GUI scheme and with a nice blue sky/ground color in the 3d window, and 2d background. The layouts are still all white, which is nice most of the time as I can check the line-types before printing.