I use a little too much black too, but my thing is Halloween prints. They keep ending up in quilts where they have no business. Example, the quilt in my avatar has skeletons dancing next to tiny blue flowers...
The quilt I'm working on now is all Halloween prints.
Best friend's quilt will have ghosts in the quilting.
But its kinda my thing and I think I've found my voice (that apparently sounds like screeching cats and cackling witches) Maybe your use of black is your voice manifesting itself. :)