I had a lot of fun playing around with different color tissue paper. I can't believe I've never thought of this before.
All of my pictures were taken with an 18-55mm Lens and a Macro filter on our Canon Rebel XT.
These are all straight out of the camera F/5, ET 1/60, ISO 400:
Swarovski Clear Crystal AB beads with nothing over the flash.
Blue tissue paper over the flash
Green tissue paper over the flash
I chose to photograph the beads because 1) I wanted and excuse to use my macro filter and 2) I had a feeling that the colored flash would infuse the color straight into the crystal clear beads and make them look different colors.... and I was right. It looks so cool. Thanks for creating this thread.