I am quite controlling with my colours but I love scrappy quilts. I'm still not a true blue scappy quilter though. I practice by choosing colours I would like and then using as many varities of that colour as I can. I did make a quilt from only scraps three inches or less to be made into 1" finished squares in my "scrappy hearts" quilt posted here this year but I did it still within a colour controlled way so I still have a ways to go. Keep practicing is my best advice. I do know a friend who did the ultimate and followed the instructions of a scrap quilt with so called ugly fabrics and did the light dark medium thing and it really turned out spectacular. We have fun picking the most displeased block we when search it and are amazed at how it is the colour a pattern that strike you first.