First to let you know, You cant self anondize because of one reason.

You need to strip the metal bare, That requires two things, One a very illegal product in CALIFORNIA idk bout you, (Very toxic basic chemical) OR you can go with the DISGUSISTING way of taking anondize off, That requires some nasty cooking material Maybe easy off or bake off or something, Also to anondize it you need to have a DC current flowing through the metal and have the first film bond first before you can even get color. For this to work you need a perfectly dust free enviromnent, IE paint booth.