It's GORGEOUS!!! There is NOTHING wrong with the black. I love it. You should make a bed sized quilt like this. I have wanted to do a black and white for years, but never felt I had the right ones. This is great. If you can't stand to look at it, you can send it to me.
By the way, what is the name of the block and how big is it? I might like to do this in blues.