named tuples replacement (bounding box tools)

To maintain sanity I suggest you don't read this script, it's just a memo to self.

two ways to min/max an xyz coordinate list

The over operator

For blending between two colors, here's a bit of mixing code: i tend to like this a little bit more, especially if I can reuse the color lambda Or another lambda version https://gist.github.com/zeffii/5354106 abbreviated here: