This is a macro of a standard dish cleaning brush.
One light mounted on the cameras macro ring, one light from below with a red gel filter over it.
Curves adjustment to bring out the red better.
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To answer a couple of comments on this shot, DOF is pretty tricky to control at these distances and very slight motion will throw the shot out, to overcome this I use a tripod for the camera with a 2 second timer delay and the mirror lock up delay feature of the D700.
The blue is just the natural colour of the brush, so I decided to offset that with red using an SB-R200 speedlight with the red gel filter over it. I've added aperture and shutter info for anyone interested.
PAW (for my 2009 goal counting purposes) - I was thinking fiber optics. Nice macro. It's difficult getting any DOF at all with this distance, and you got good DOF. Did you have a high f-stop? It's maybe a little too bright at the end of the brush. I like the blue light coming from the back, but I didn't see anything about blue in the description. Is that the brush handle color?
A-mazing! I am really looking forward to watching your photos this year. I don't use my macro lens nearly enough for creative genius such as this, and I'm hoping for some inspiration. You are off to a good start! This reminds me somehow of ice and winter. I really like it alot.