How can i engrave with colors?

Hello beautiful people. I saw several works in Facebook groups of engraving with colors. How can i do this? I have an Ortur laser master 2, 15 w. Thanks.

Can you provide examples of what you’re describing?

was it on metal? are you talking about a mopa laser?

Hello.
Here you are:

Hello! I don´t know the material:

Ok, youre talking about the White Tile Method i think.There are Many threads on the forum describing the process.

Why not just ask the people in that group how they do it?

I think you are on about scratch pads, when the black is engraved the colour shows through.

David Bunting watch this video: https://youtu.be/g-4UzAiO6Xc