I did a quilt with nine shades of grey. I now have tons of grey fabric. One thing that I make sure of when I buy a fabric is that I have to actually like the fabric, and am not buying it just because it matches another fabric. Just like you, I have to "feel" that the fabrics that I'm going to use are right. I have lots of quilting books about color, But I don't pay attention to any thing they say when picking out fabric. I do wish, though, that there was a gadget like a hand held flashlight that had a natural light bulb in it so that the light in the stores don't affect the colors so much.