Can't decide on my colour scheme for my marines - Please hel

[Vivster]

I realized I did not like the dark blue or purple after painting them and purple and bright blue take too long.

So I went for variations of this dark grey/ borderline black instead

 

http://i.imgur.com/MFIRmPJ.jpg

http://i.imgur.com/cQpFtMq.jpg

http://i.imgur.com/UuJwlQH.jpg

They are all very similar and I can't decide - these schemes are for normal marines only - i know what i want for veterans and the like. These guys will be on snow bases.
Please help thanks :)

[skawolf]

Why not all three and use the different schemes to differentiate between types of squads?