Okay-blue does mean Polish then. As for the 'warts', that answers my next question. I thought I saw risen scales...Sounds like he has scaly leg (leg mites). Read here.
I've never tried it before, truthfully. I wouldn't try if there are doubts as it could hurt the bird. I've heard veggie oil or vaseline can be used as well.
Also, you might want to clean out the coop where he's staying or the mites could come back. Perhaps check for body mites, also? Mites are horrible. They'll travel from bird to bird.
Thank you. This evening I rubbed Vaseline on my cock and it really seemed to like it. It had to feel good judging by how rough and scaly its feet were.