Hobby Progress Challenge Wip: Iron Hawk Librarian (Iron Hand Space Marines)

A WIP shot of my Iron Hawk Librarian with Mind Forge Stave.

I am wondering, though, which color to paint the feathered part of the bike fairing.

I am leaning towards Red as shown, but what about the accent color seen in the Scout Sgt. Imperial Eagle on his chest piece? Any input?

Thanks for the read,

BDS