I have a pretty good sense of color, however, when choosing fabrics for quilts, I go with a focus fabric -a floral, geometric, large scale print, then work off that. Using the dots on the selvedge of the focus fabric helps, using a color wheel, picking colors that are opposite, adjacent, etc. on the color wheel. Don't get stuck with just one line of fabric, although they were designed to go together, take your focus fabric and hold it up against colors that you like to see if they work and always pick a light, medium and dark of any of those colors. Too many times, and I'm certainly guilty of this, we pick fabrics in the medium range, then forget to pick up lighter and darker colors. Fortunately fabric companies are making more dark fabrics in the fabric lines that they produce. Don't get discouraged, them more quilts you make the better you will get in choosing the "right" colors for your quilts.