When I first setup my storage area, I put the fabric together by coordinating lines and then by colour. The next time I reorganized, I put the fabric in colour and theme groupings. This time when I was cleaning and reorganizing, I put the fabric back into their coordinating lines, blenders and then colour groups. I wonder why I switched them back and forth. Maybe, there is no right or wrong way to organize your stash...just whatever strikes your mood at the time and whatever works.