I seem to have a lot of blues - all shades and a great mix if lights, mediums and darks. I also have a great selection of pinks and all sorts of florals. I generally only buy blacks, browns and greens when I need them, especially greens because there are so many different greens out there. I don't generally have gray fabric but then I haven't found that there has been a need for them
I buy baby/juvenile when I need something, same with "manly" type fabrics - just don't keep a stash of them.
At one time I had a great stash of Christmas fabrics, but that stash if slowly going down, which is good, because every year I see great looking fabrics but have held off buying because of all that I had in my stash.