Color photography has been "mainstream" in the haute gallery and museum context ever since the 70's. If anything, it's black and white work
that is considered passe nowadays and endangered, unless it's some auction setting dealing in vintage work by a handful of famous names.
But it's all just a stupid game. Do what you enjoy and do it well, and don't worry what a few half-educated idiots think, who probably can't take
or print work half as good anyway. I don't know just when I get back in the game, publicly at least, maybe in a couple more years... but I've
certainly never had anyone in a serious gallery or public venue setting discriminate between one piece or another based on whether it was color black and white. I do both. They appreciate both. The potential market or venue will vary with the individual, of course. And I don't have either time or patience for any little-league types pontificating about such matters.... they should stick to selling designer corndogs.