I don't know if this has been mentioned before, I did a quick search of the forums and didn't see it. Post it notes can make flash photography a little more colorful. I actually had two slave flashes for these shots, one camera left and one camera right, and just put a purple (it looks rather pink in the shot) and a blue Post It over the flashes. Unintentionally I got some interesting shadows because of the flash on the left.
I had to do a little cloning on one of the stamens on this one because it had a flash of blue on in from the flash and it just looked very bad. Other than that both photos are SOOC. The blue Post It was to the left in this one, purple is to the right.
The Post It notes are reversed.
One of the advantages of having a camera when boredom and insomnia strike. Interesting possibly new stuff happens.