I have 2 old Avon powder puff tins. The colors are faded but the design is still present on one but the other is very faded and essentially not there. I would like to paint over the remaining paint on the one tin so that I can just renew the design. I have everything cleaned but cannot figure out what paint to use. Basically, I would be coloring in the design that is still there, in colors as close as I can get to one ones present. Do you have any suggestions? I know I would need a sealer also but really can not do justice to the design if I have to do a new one. I can color in the lines though. I would greatly appreciate any advice.