alt Hacker News13 year old me who anodised remote control car chassis completely agrees the process is quite simple.
In the context of a MacBook, it’s not. Removing just the aluminium components and leaving everything that doesn’t like baths undamaged is practically impossible for amateurs. I’m not sure it’s something many professionals would take on.
I think it could be possible for the bottom half. The lid would be way, way trickier (unless you have one with a broken screen already and know how to put the new one together).
I’m wondering what custom colours you could do with that process btw!