You can get metallic paint at Michael's,probably Hobby Lobby or any craft store.
These are a set I made for Mary as part of our music swap.
Find ATC tempalte here creativemompodcast.com
The actual ATC has to be slightly larger than the information template you'll be downloading.
I took vintage pictures I found and paired them with inspriational music quotes which I felt suited the pictures.
(I happen to be a huge fan of Aldous Huxley; so one of his own quotes found its place in this atc set)
I painted around the edges of the text and borders of the cards with the metallic paint. I used a gold and a yellow gold.