Some time ago I made some colour test strips of the enamel range from Milton Bridge (see Enamel Colour Test blog post). My wife was quite taken with these and wore one with a choker necklace. Since then I've given some away as presents. Here are some photos of Peridot Green, Dusty Rose and Cobalt Blue transparent enamel strips mounted onto a silver choker necklace:

This one is the cobalt blue

This one is the Amber