Thank You corpuschain,
Next time I do a paint order I will get blue wash.
I have Nuln Oil Wash right now as the only wash available.
When I painted these Chaos Terminators I was following My old Second/Third Edition paint scheme idea for Alpha Legion where there was a bold yellow color included in the detail work.
For the heavy flamer, combi-flamer & the affixed chain-weapon bayonets the yellow is enough. I like Your idea of painting the trophy rack parts Dark Green.
My current idea of how Chaos Space Marine - Alpha Legionnaires should look is the main armor Dark Blue/Navy Blue, Silver Trim & Filigree, Red or Green Lenses & graduated colors of green for helmet head dress hair.
My recent past, basic squad of Alpha Legion troops looks like the picture below.
One thing I have yet to do for My Alpha Legionnaire collection is to paint Hydra Scales on the main blue armor.