How about gold leaf and modge podge? You could do something subtle with just a bit or go real bright with a lot!
Connie...Can you send a picture of the box you are interested in decorating? Thanks
Decoupage is the art form I practice. This is a jewelry box I decoupaged. Each item is cut out of paper, the necklace and bracelet were from a magazine and were cut out bead by bead. Easy and very inexpensive art form.