I like the placement of the blocks in the second picture best. The darker red seems to look better on my screen than the blue or the brighter red in the top position.

i like having them on a color rather than white, but i'm not sure that blue is the right blue... maybe more toward a navy blue. i love the way you have arranged the plaid in kaleidoscope fashion

I like your second layout better as well. Think it makes the colors as well as the blocks 'pop' a bit more.

I will try to think about the back once I figure out the front. :-)

I'd suggest a darker blue than the one presented. You've got a nice arrangement of blocks~ :)

Have you any black flannel?? It might make the red pop.

I would go with black.

I vote for red.

I like the red, but I agree a dark green if you have it would look really pretty too.

have you thought about downloading the Home Depot app where you can try the different colors for sashing and solid color blocks. Just a thought.