Very cool. That's something I've always wanted to try, but never put any effort towards. I always wanted to see if I could anodize aluminum too.
I've been studying that too. It's a fairly straight forward process. It requires sulfuric acid but there's other methods.
Project list. A variable power supply. Industrial anodizing dye. Lead anodes. Sulfuric acid. Plastic tub and two stainless steel pots.
Maybe $150 for it all. $200 if you splurge.