Now that we know why sugar is a jolt to hyperactive children! LOL
I think the blocks look fine. I didn't quite understand what your question was, but, it looked to me like you made the outside rounds be the solid color and then alternated the beginning squares ..
Are you going to set the blocks in exactly the manner that you showed us on the page? Or are you going to move the darks to create lighning, or barndoor, furrow? Know what I mean?