I had the same problem. But I've overcome it. I put all my scrapes in a box, closed my eyes, picked out the piece of fabric, and no matter how ugly I thought it looked at the time. They turned out pretty cool. I pattern I made didn't use lights and darks, so I didn't separate them. But if you are making a pattern like Log Cabin with half light and half dark I'd separate them. Other wise, just dig in and pretend you are color blind until you have it finished.