You can print coupons from any of the sites I've mentioned in the past few posts on either a black & white or color printer. I prefer a color printer, as there are several security features on the coupons that I think look better in color (and are therefore more easily redeemed).
One thing I ALWAYS do when printing coupons from the Internet is print them on the back side of paper that has already been used. In so doing, I make sure that there is no information on the scratch paper that could identify my family.