Type in DIY anodize or DIY home anodizing.
A lot of info there.
just found out also you can spell Anodize or Anodise.
things we get to learn.
ps RIT color dyes (like for dying T- Shirts is used)
i'd like to try but with the body on can't see those parts anyway, so I have not attempted.............Yet.
we can all make our own wheels and tires, these things are just very time consuming. it is all there just surf and seek and you shall find.