If you're army is painted as the codex Dark Angels then Green or black, not bone.
A storm talon wouldnt be part of the death company? I'd expect it to be Ravenwing or maybe greenwing.
The dark Angels Deathwing are only bone in honor of a small number that held a position against insumountible odds. All the other Dark Angels later foundings I would expect to see Black Deathwing.
That being said if keeping it fluffy isnt important, A bone white storm Talon with green bits and pieces in Deathwing Style would look nice... just not fit the fluff
Gota vote for green if i cant vote for black