Door panel texture

[77BBGMC]

Based on what I've read it sounds like dying your original door panels is a better option than new, based on fit? The panels on my 77 are in good shape except on the top where the texture is worn smooth (arm resting on the edge) over the years.

Does anybody know how to replicate the texture to match the rest of the door before painting?

I've tried to search with no luck...I"m a rookie so I may have been doing something wrong.