It's like a bargello, but only with 7 fabrics. It's called Radiating Diamonds by Nelline Kornock. "Focus Fabric" is not at all what it calls for - it's all about tone. Batiks maybe - ? But I would have to buy online and that's scary.

its not as scary as you might think. Connecting threads is great to get batiks for a good price if you want to go that way. You don't have a quilt shop with batiks in it near by?