I have both color and black and gray tattoos. I think after my experience with color that I want to keep my tattoos black and gray.
Is it seen as negative to have both kinds of pieces on part of your body? Do tattoo artists encourage you to keep all one sort of style on your body? What if you don't really have one style?
It shouldn't matter, plain and simple. Any confident, secure guy worth going out with isn't going to be scared off by a little ink. Or a lot of it even.