Great idea, it will look great when done.
I put Christmas fabrics on their own shelf, backings and kits on their own shelves. Then sorted the other quilting fabrics by overall major color. Predominantly 'blue' prints went in the blue section and so on. Since I use a lot of blues, greens and browns... I found I needed two shelves for each of those. So I made one shelf 'light' value blues and the other 'dark' value blues. Helps when I'm digging through looking for values.