Here they are (photos taken in weak winter light):
The grenade launcher is an experiment: I really didn't fancy painting more of my traditional DPM camouflage, so I tried something new on a whim...and I like how it turned out: 
It's very simple: Scorched Brown drybrushed over a basecoat of Dark Angels Green and followed by little clusters of three dots of Bleached Bone.
The third chap is different because he was thrown in as a freebie with an eBay win, but his melta gun was needed, so he's joined the ranks of the veterans.
Cheers,
- Drax.