DragonKing: I have never seen the game for sale but that does not mean it isn't ... this is one Fencer had here from the start of the site, not sure where he found it. I would expect that if you could make the board it would not be hard to fnd markers which might be used, could be checkers with a double stack for the Commander or "King" tank for instance.
WRT to the pink square, only the Commander can land or pass through them and they are all safe (that is one Commander cannot take another Commander there).