I know just how that "mating" business happens. I have moved a couple of times in the last 5 years and that helps to get things under control for me. We are finally settled (I think) and I have a fairly consistent method for "dealing" with just this problem. I go through everything each January. I move out "accumulation" and whack it up for charity quilting. I work on those until spring. At the same time, I line up groups of fabrics for my spring and summer projects. By mid fall and sometimes earlier the mating has really gotten evident again but it has to wait until after the holidays. I am starting to really like my method because it's a plan I can work with and enjoy. I think you have found yours as well!