How do i put colors on this 3d shadertoy code?

[Mrz00m]

Here is a remix of a Kali fractal. Can i make multiple colors on it same as in the screenshot?

Shadertoy Code:

https://www.shadertoy.com/view/lsjXzW

i want this please:

[cKleinhuis]

hmm, most of these coloring techniques work by orbit trapping

orbit trapping is a method where in each iteration the current z value is measured somehow, for example, a circle orbit trap would take the length of current z value

this value is somehow accumulated/aggregated one of the easiest way would be to use a orbittrap=min(length(z) so, with this value you can then color the rendering, in fragmentarium you find many kali renderers that use this method