Yes, it can be done at home. All you need is a container, good ventilation, lots of acid of some sort and a proper source of electrical current. Frankly speaking the process is so nasty that you want to keep well away from doing it yourself. I was at one stage close to making a small anodizing machine but the substances one has to work with are way too hazardous. My friend's had his frame anodized, no idea why one should want that done. Lacker is good enough. edit: you do realize that the term anodizing only refers to creating a thin layer of aluminum oxide and has nothing to do with colours? I think the only process which actually creates a colour layer on the metal is plasma coating?