I agree with the "stash happens" theory, however, I have been known to buy every color a pattern comes in when one grabs my interest. These are almost always tone-on-tone, or dots. Is there a difference between "stash" which to me is leftover fabric from another project, vs "collection?". I deliberately collect B&W, cat prints and "fur." Fur print seems to come and go in popularity, so I grab it when I find it as I seem to always be appliquéing critters!