When my mom was making my log cabin quilt, she told me to pick my blues from her stash, which I did. She looked at the fabrics and said, those won't look good together. We layed them out on top and next to each other and boy she was right, sometimes if she is not here, i look at the fabric for 2-3 days before i pick. But I think the ladies are right if you buy a charm park or jelly roll, the fabrics will always go together.