[quote=Dead Cruiser]
Blue/White sounds reasonable but I don't see much justification for any other color in him. I had him pegged as mono Blue earlier only because of his cynicism gained from when he was undoubtedly Blue/White.
[/quote]

This is because of considering Emiya Shirou to be a separate entity from Archer. 

[hider=Green Mana]
He's [i]literally[/i] a force of nature now. If you can't see how that puts Green into it... >_>[/hider]