I was thinking about that, too and I think is probably more complicated. Having two different pieces bounded on two different colour is definetly better than bounding them on the same colur. That is really easy too see as material gets reduced. But I'm not sure if a simple "bonus" aproach is enoguh, just as a first glance (as I did not make any experiments) should not be.
Also there is a game named Dada I had noticed where all pieces are colourbound so as to white is the attacker on the white squares and black on the black squares (as kings are bounded to the reversed colour). But there is a matter more of attack and defence, you bassically have 2 different games rather than colour bounding. Point being extreme cases, as almost always, give wierd results. But maybe we are not tali=king about extreme cases here as good players/engines would work to avoid that :)!
I was thinking about that, too and I think is probably more complicated. Having two different pieces bounded on two different colour is definetly better than bounding them on the same colur. That is really easy too see as material gets reduced. But I'm not sure if a simple "bonus" aproach is enoguh, just as a first glance (as I did not make any experiments) should not be.
Also there is a game named Dada I had noticed where all pieces are colourbound so as to white is the attacker on the white squares and black on the black squares (as kings are bounded to the reversed colour). But there is a matter more of attack and defence, you bassically have 2 different games rather than colour bounding. Point being extreme cases, as almost always, give wierd results. But maybe we are not tali=king about extreme cases here as good players/engines would work to avoid that :)!