Very nice!
I really like the dark olive green on your Klingon ships. I always thought that the Klingons were the metaphorical stand-ins for the Russians during the TOS episodes and TOS movies. The green reminds me of Russian armor.
For my Klinks, I used a grey primer and then washed the minis with Citadel's green wash. Its more of a kelly green, but I like the effect very much and a bit of drybrushing with a sage green makes the mini's detail pop right out.
I have enjoyed seeing your great work - keep posting more!!!!