Set layers, 0.16mm for the first, 0.08mm for the rest.

Use colours darker on the bottom, to lighter at the top, or whatever you like.

Here it's

dark brown, 1-13

dark grey, 14-16

silver, 17-18

tan 19-24

The frame is one of these, adjusted for the size, https://www.printables.com/model/551103-hueforge-frame-modded-from-rorys3d