IrishNY, thank you for pointing that out. I in fact have that ruler and I think I have that book as well but have not used them yet. I'll have to dig them out. It does look like they made a number of different strip sets for the color side--some with 2 different colors and some with 3 and the widths vary as well. Really, you could mix it up quite a bit. Thanks for the reminder. I have so many batiks in the whole range of the rainbow that I am always trying to come up with good ideas on how to use them.