In contrast ....
For my liking, they are just too spinny, dizzying and overwhelming with them the way they are.
Plus, that effect would be worse, once they are stitched together.
I would audition a sashing, using the same white background fabric and no cornerstones.
Or even alternating plain blocks ... you could have enough for a 2nd quilt by doing that!
How kind of you to make this for your friend's Mom.