Pretty Fly For A White... Tub

I have two cast iron tubs. One yellow and one pink.

It just won't do.

I want both of them to be a nice, pretty, standard white. Is that so much to ask?

So I plan to re-enamel both of them white...
Ok, fine. I really just want to dress up like that guy. Coveralls and respirators are hot!

I found instructions on This Old House.

I can do it. I just need the equipment and materials.