2 Color Mix Test

By carefully adjusting the geometry in a model so that a darker color is under a lighter color by a certain number of layers, it creates a simple color blending effect. With black and white ABS plastic, this allows about 3 or 4 shades of gray between all black and all white. Unfortunately, the effect is minimal on the sides of objects, but on top and bottom it's quite clear. On the side you get about 1 shade of gray between black and white.

This openscad script lets you generate test patte