LOL-X,
I use a product called Fleck Stone paint. What is good about this product, is it gives a three dimensional effect, and does not reflect any light, as even flat paints can do with the new high powered lamps. The other benefit is the paint is a two stage product, which requires a sealer coat. I do not use the sealer coat, which makes the paint removeable, and mission specific. I have found the combination of the sand and green in a breakup pattern works well in almost all environments. I used a sponge to add paint to the killflash (honeycomb thing) on the scope and scope cover so it does not show up as a big black circle. The flash makes it look a lot lighter than it really is. The knife is a Benchmade Mel Pardue collaboration, I forget the model name.
Some of the guys asked if I was going to paint the SD so it would blend in to the environment.

While I'm sure the SD could handle it, and would look exually as striking, I just couldn't bring myslef to do it.