For this Chaos Space Marine I used a Tyranid Frag Spore Mine for the head. I painted his armor up in my standard Extinction Angel color scheme and used Snot Green for the head.
Using my magnet tutorial I magnetized just this models gun hand. This enables me to swap out just the weapon without having to paint extra arms and shoulder pads.
I am happy with how this guy turned out. Click for a larger picture.