I used acrylic craft paints, a cheap airbrush and some mdf. If your good at masking you could make some really cool engravings using multiple colors.

Here is a the airbrush I used. https://www.amazon.com/dp/B07SQYLBR5?...

These are affiliate links. You get a discount and I will get a commission whoopi!
Comgrow: https://comgrow.com?sca_ref=3863049.hf1agsrXk6
Atomstack: https://www.atomstack.com/?ref=e2vymlwe
Wizmaker: https://www.wizmaker.com/?ref=kyjxzkza