I think that most people gravitate to color range that they like. I personally pick fabric that I like and work with colors that are in the fabric. There are little dots on the salvage on most fabrics that thell you what colors are in it. You can use that to find the right colors. I also think that there are 2 kinds of quilters. Those who lean toward blending colors and those who contrast colors. I tend to be a blender. I also get color inspiration from the pattern itself. I am a red head but I still make quilts in purple and rasberry colors.