Highlight Anatomy - TheArtGun/GunquinDocs GitHub Wiki

If you'd like to learn a bit about the muscles, you can highlight them by first selecting the muscle mesh

Then, in the properties panel select the Material Tab

With any material selected, you can change the color in the Viewport Display section just under the Materials.

NOTE: Material changes will affect the render, and it's not easy to reset them so keep that in mind! (Making the entire model neon would be hard to reverse)