Erika's Paint Box

Most of the time, when I start a quilt, I don't know who will be the recipient until I'm halfway through. So this quilt is going to be Christmas gift to my son and his wife. She is an art teacher, and as I began making this quilt, the more I looked at it, the more it reminded me of watercolor bricks of paint...thus the name! I used the MSQC illusion pattern but used layer cake 10" squares. Then I added one giant shadow to make it look like the whole top had a shadow, because the quilt needed to be King-sized. I tried to make it look like the sun was shining on the upper left corner, down to the bottom right so it followed the light spectrum of a rainbow...red, orange, yellow, green, blue, indigo, violet.