How to do procedural color like this?

Hi, I am interested in generative mountain/terrain,so I hope to assign colors to each vertex, and do some stroke, maybe like this:

Any guys could give me some ideas?

I would give noise a try:

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Excellent! And thanks a lot! :grinning:

What really bothers me is how to make this pencil like stroke~

Try to adapt something from these examples:

:eyes: Helpful! Thanks!

Mountains with noise strokes (to the pic provided before):


Thanks!The flow of the fog is very cool!!!