basically https://sketchfab.com/3d-models/color-changing-monkey-7d490276b6354542aa63911e02c5f5b9 but its properly rigged since some people didnt know how to. in order to change the color click the monkey model, go to shading and go down to the colorramp node. click the blue box right above the Fac text and select your color. no need to thank me or give credit if you want to give it give it to https://sketchfab.com/Pancake_Prime