We stock blue, black and red. But if the customer is using more than two colors, sometimes one color, we print it anyway. It's cheaper and more accurate to put everything down on one sheet of transfer
paper. Yes, you have to laminate and put it back in the cutter, but it probably takes no more time to prepare than putting in several different rolls of color. Certainly that's so if logo printing is involved. Usually looks better too. In my opinion.