I’m starting off my second year (!) of Sunday sketches with rectangles. Lots and lots of rectangles.
This would be such an easy design to translate into a quilt pattern. Most of the rectangles are a single colour/fabric. The rest can be made by placing two rectangles (one dark and one light) right sides together and perpendicular to one another; sew a diagonal seam (at a 45-degree angle) across the area where the two pieces overlap, and trim away the excess. Use sashing to separate the rectangles, and surround everything with a nice big border.