Thank you, everyone. I made about 15 more blocks (they can be sort of addicting) and included more medium blue and colors other than red. I also dug around in my stash and found some tan marble for the sashing within the blocks and some denim blue tone-on-tone for the sashing around the blocks. For the cornerstones, I have a very dark red with a small black geometric design to use within the blocks and a burnt orange with a small dark blue and gold print for the larger cornerstones. Both look good with the sashings.
You helped me so much....I would not have thought of the tan sashing at all and needed to break away from the red! I'll post another pic when it's all together.