When I started quilting some time ago, it was suggested that I pick a print I love and look at the colors a designer chose for that print. I may not use that print in the quilt, but I know that these are the colors I am drawn to. Also notice that many fabrics have color keys in the selvage. They will show as color dots or squares. These are the exact colors used to create that print. After awhile you will become more comfortable chosing your own colors.
Freddy Moran believes that red is a neutral. She loves color! I have heard her say, why use 10 colors when 100 will make a more interesting quilt. Check out some of her books, and you will understand what she means.