I kinda like the idea of working with one fabric for each color, but then I also like the idea of several shades for each color. I'm going to pull fabric to go either way depending on the clue/block. This is my 3rd BH Mystery. The past couple BH Mysteries had one fabric color that Bonnie used as a constant. I did not see that in this year's Mystery introduction. I have used a single fabric as a constant all the way through one clue and was pleased with the results. This gives up some scrappiness, but for me, it worked well.