Madquilter said it can be done in 2 sizes. I am doing the smaller version because I wanted to use up smaller scraps. Mine are cut 2 inches by 5 inches. The finished sewn block of 5 pairs(neutral and dark) make a 8 X 8 inch block. I am going to make my blocks and then arrange and sew them together at the end so I get a good mix of colours.
I think the large size was 3-1/2 X 9 inch rectangles?