If you are going for an Irish chain, and want more colors, your center square will to be larger to be able to get the chain look. If you are doing two colors, the nine patch is fine. Also, as much as I like the jewel tones, the contrast ( in the blocks without the black) isn't nearly enough to accent your chain fabric. It would be a shame to do so much work, and have the colors just blend into one another when the quilt is one the bed. I think you need a MUCH lighter, of the black, background for those jewel tones.