Sons of medusa help

[Sanguinius Chosen Wing]

Just a couple of quick questions;

 

1. Does anyone have a relatively easy method of a brightish green? So far they have gnarloc and a wash of thraka but I have stalled when I found out that my mate is doing sallies and we were going to have a similar paint scheme. So I've decided to go brighter but I have never tried green so starting with that base any ideas/photos would be handy. I dont mind doing a few washes highlights but don't really want to do glazes etc

 

And

2 any fairly effective ideas for the white helmets? Doesn't have to be the best just something effective.

 

 

Not a question but if anyone has painted any or has pictures of some that would be handy if you could post them up

Any help would be greatly appreciated