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Gorgeous! I've been using http://cl.ly/image/0S0X0V3F2H2K for the last few years and looking for similar, nicely colored images to swap into a rotation. I had two fun thoughts w/r/t your code:

* How would you feel about using https://kuler.adobe.com/ for color palettes?

* Would it be possible to make the patterns repeatable or tile-able?

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You can use any color palette you want! The whole thing is packaged up as a drop-in javascript library.

Check out the x_gradient and y_gradient config options: https://github.com/qrohlf/trianglify#options

As for tiling, it's definitely possible but it wouldn't look very good with the gradient palettes - you'd have to use a randomized palette for the tiling to look natural. I'm probably not going to make those changes, but feel free to send a pull request!

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