Wow. My stash just plain 'ol multiplied in the dark. Of course friends helped it grow when I first started.
I'd buy blenders, fabrics that read solid, and lots of batiks. I would make an effort to supplement my stash in terms of darks, mediums, and lights. From what I have learned too many of us get too many mediums or fabrics that can be read as medium and therefore need to buy more fabric when using from our stash.