I use them alot. Go to Yum web site for dealers. I got mine through the company that distributes them. I had to buy a few for the discount but it was worth it. One caution tho is they are very soft and like to tear. I have to put a dab of super glue on the jig first and then they seem to stay on and last. Like anything else... sometimes they are the ticket and sometimes no better than the rest. Colors? I think I have them all and apply the color scheme the same as any other soft plastic. I have all the vibra tubes also. Of course you can also get the YUM liquid to get all over your hands too!!! LOL