Here's another take, not straight vanilla.
It's sort of a TOS upgrade, that addresses some issues I have with the three color scheme. Medical (sea green) is split from sciences and security (brown) is split from operations. Picard is wearing the captain's prerogative olive drab. Troi is wearing uniform colors at least, and Wesley is sent back to gray.
It was an exercise in teaching myself how to do this stuff in GIMP. I would have liked to have worked a little more on certain problem areas, such as Picard's head, but I had to call time.
I really tried to get the colors to look as TOS-y as I could. I hope I succeeded.