if you get more into diving DHs, there are a lot of yearly vintage get-togethers ...
I'm working on how to stealth my Scubapro 1st and 2nd stage inside those sea monster double hoses.
And as for getting yellow hoses! I'm sorry but ...ewwww! I like the white grey ones though. I'm guessing if I'm going to put new parts on it I can pick the ones I like that fit. It would be kind of cool to have it painted white or chromed to go with ghost hoses.
I am only aware of 3 and one of those is mainly hard hat divers. I just got home from Sand Dog which was in Panama City Beach this year and "The Legends of Diving" at Portage Quarry in Ohio is in August. Do you know of more? Where and when?
As for hose color, you can use any that you like. Green, gray, yellow and black are currently availlable. I personally like yellow with black mouthpieces although the gray look good with the reproduction (or real for that matter) Voit blue cans. Painting the cans can be problematic, if you must color them the only reliable way is to power coat them and even then you need a power coater who understands what he is doing. Just slapping on some spray paint is not going to cut it.