The colours I want are those:

First I was thinking on using only the brighter green for plates and armour, and white or grey for the trousers. However, I am thinking on using both greens (the darker for the plates, the lighter for the trousers).
I would like you to help me with the following:
A) What scheme would be better?
B) How do I paint those greens? Please, if you give me indications, could you do it in the GW style? I mean:
a) use green colour x for basing
b) use wash x as a shade
c) use first lights with colour x
d) then apply extreme lights with colour x
Please, bear into mind that I have mostly the "old" GW colours (the ones just before the newest range).
Thanks a lot!