Eldar - Dire Avengers painting in process

Popped home for lunch and snapped a quick pic of the Dire Avengers in process while I had some good light. I went with a brighter blue than the Guardians to help differentiate them as an aspect warrior unit rather than just another Alaitoc squad.

Still quite a bit of highlighting, detailing and basing to do of course, and I'm considering how I ought to finish of the helmet crests - I'm torn between leaving them solid yellow as-is, or perhaps adding some black (or possibly red) stripes to them as shown in the codex. Thoughts? Once these are done I think it'll be time to bite the bullet and start in on the Warp Spiders - definitely time to do something other than blue and yellow!