I was experimenting with a red pepper. It's quite hard to pick up a nice pepper to photograph its inside when you can't actually see it. I guess it's just luck :P
In this case, the seeds of the pepper I choose were a bit brownish, but it's fine by me (besides, I didn't want to change its original color with any program). I'm going to continue my experiments with fruits and veggies until I nail it!
Nikon D90 (105mm f/2.8) - 1/50s f/8