Is better than this:
(although this isn't necessarily bad...)
But here's the funny thing...
ISN'T better than this:
I know why this is so, design wise, but the more important thing is what I am after. The original idea of the diamonds floating above the black and white backgrounds works best if the diamonds are a single color. (second photo) That was what was in my head when I got started.
When the design is flipped on its side however, there is a lot more visual excitement in the last photo, because the diamonds appear to be moving and twinkling. The horizontal arrangement of the diamonds is stable and relaxing, which is another reason they work best as one color. The vertical arrangement of the diamonds is more dynamic, and when they are more than one color, the arrangement is more dynamic still.
It's all in what you want. My original concept (the diamonds floating above the background) works best when the diamonds are a single color. I have to say though, that I really like the diamonds running vertically. I really love it when my quilts have energy and zing, and the last photo really encapsulates that.
It's a good thing I have a lot more scraps!