In the previous ramble about random colour, Leah asked

I’ve been wondering, is there any way to use effectors to apply a random color from a subset of colors (such as a range or gradient)?

So here is one method of achieving that.  I’ve used the multishader to create a subset of colours.

Multishader

Then the random effector to randomise those colours.

Not sure if it is possible from a gradient, but if anyone has an idea for that then please post a comment.

Well Rick Barrett from Maxon came up with the solution here.

For a gradient, just put the MoGraph Color Shader in a Colorizer shader.

Nice and simple too. Thanks Rick.

Result using Multishader

Download the C4D file here