This is Very Cute! I've made 3-4 quilts with a similar variation. On the ones I made, some squares had NO circle on it, and on others there was a smaller circle that was also added on, but off-centered either to the lower left or right, or upper left or right. Just for fun. I ran across the pattern just recently when I was searching for a different pattern, and the one I used was called "Opposites Attract". I tried to Google the pattern, but it doesn't come up.