Here I've stamped it directly onto an acrylic tag and then painted it on the back with some of the Interference Green and Interference Lilac paints. I wanted to see if they'd show through and so painted three layers.
Although the pic doesn't pick it up, they're actually iridescent.
I then spent ages picking out some paper to go on the back, dark or light? Eventually I went with this pale green that I overstamped in grey.
Thanks for looking!