Well, I mean you CAN choose your color, if you have empty slots and you occupy the slot that you like
but a drop down list, and some extra colors would be very nice. And something similar to the Army painter from DoW would be nifty (and probably easier to implement since it'd be for individual demigods rather than the whole team, though a lot of the nice details might have to be toned down to translate well with that, not sure)