I saw a very similar scrappy version somewhere (possibly here on the QB.)
The stips are 2 1/2" and I added a 2 1/2" square to the end of the yellow. LOL Owlvamp, but you should have enough 2 1/2" stips to make a very scrappy version. I sewed the red, blue & green into long strips then cut them at 8 1/2" then added the yellow (cut at 8 1/2" with the blue square added and trimmed to 1/4") so that each block is 8 1/2" square.