Hi Ina! One more book for your list:
Fabric Shopping with Alex Anderson: Seven Projects to Help You: Make Successful Choices, Build Your Confidence, Add to Your Fabric Stash by Alex Anderson
I have helped my friends pick colors for their quilts, using Alex's idea: I have them pick one multi-color print that they "LOVE". Then we'll go around the store picking fabrics with colors from that one focus fabric. When you then use those colors in a quilt, you already know they will go together 'cuz you loved them in the original print...even if you don't end up using that fabric in the quilt!
Personally, I've often been asked "How did you know those colors would go together?". My answer? Because I liked them! And, as MCH said, nature does know which colors go together...look at some gardens & landscapes: every color under the sun together (literally! LOL) & all of them beautiful! Go for it!
:D
sue