I am going to point out something here.
Anodizing is a chemical/electrical process which not only introduces color to aluminum, but also creates a harder layer over the soft material beneath. When you "strip" anno you are also bringing that soft material back to the surface. It wears quicker and in lieu of using a sealer/wax on a regular basis it also allows the bit to oxidize.
My suggestion is to find the part you are looking for in the color you want without ruining it via stripping and leaving it un-anno, or to contact a shop that does anodization and having them change the color. Most of the time there are services readily available and they don't charge much for standard single colors, particularly if you are happy with a dust or matte finish.