Dina, I think color selection was a HUGE deal for me! I am a nurse by education..not an art major! My best friend was a pad of graph paper and some colored pencils! When I got some colors I liked, I went stash diving/fabric shopping and auditioned different fabrics. Lay them out..get a design wall (my earliest one was a flannel backed table cloth from the dollar store! ) tack up some and walk by it for a few days. Those fabrics will TELL you which ones to use. No wrong answers...and you WILL learn alot about color..and what YOU like. I have been quilting for YEARS, and still learn something from EVERY quilt I make. The last one I used a fabric that was too busy to my eye. The recipent LOVED LOVED LOVED it...but I was glad it was not in my house anymore! Rail fences in shades of one color are LOVELY...go for it!