If you tweek your color / fabric placement a bit you could turn this pattern
Into this one I am just finishing.

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Jordan Fabrics has a few tutorials on this.

ROh, how gorgeous! So vibrant!

Also lovely, but I am trying to get a look from bigger pieces, not strips, using a pattern that clearly spells out how to get patches of light and dark areas that give the overall effect of movement. Not just light /dark/light alternating block after block. within each block uniformly. I have seen ones where it appears a flashlight is almost highlighting different areas while others are in shadows. I will keep looking.

Made this one using 3 colors....

So are you wanting more like one block wonders like these centers, just the whole quilt?

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The picture you posted looks like Winding Ways to me---very similar (I think the difference is Winding Ways uses curved pieces), and there's a ruler for Winding Ways.

Bingo! Yes, thank you. That is the type of pattern I'm thinking, but didn't know it had its own name. When you wrote "Winding Ways," I googled images and there are lots of examples. I just want to do one in Kaffe colors and achieve the same effect, but I don't think I could figure it out on my own without a ton of patience.

Since Craftsy has changed to Blueprint, I couldn't find the pattern on my phone. The platform has changed so I had to look on my laptop, but here is the link to this alternate Kaleidoscope pattern:
https://shop.mybluprint.com/quilting...pattern/190932

Conchalea, I also downloaded that pattern. I tried one block and gave up. It is extremely difficult to get everything to line up properly, and the thought of trying to get a second block to line up with the first was daunting. If I were to do it, I would paper piece it.