As a follow on to the last post, I narrowed the fabrics down to these ~60:
THIS QUILT I made for my sister, but much simpler (that one has more than 1000 pieces, whereas this back will have less than 100 pieces). I cut out one piece from each fabric using a 9" triangle ruler - I cut them out the size of the ruler so the pieces will be 9" after they are sewn. I threw them up on the design wall after cutting each piece, placing them generally in a red/orange/yellow DOWN and green/blue/purple UP configuration. FYI my design wall is simply a large piece of white Warm & Natural batting nailed to the wall.