i don't know about everyone but somehow i love the WAG-7 in WAP-4 shell with the blue livery , looks like a blue brother of WAP-4. somehow it seems smart to me and better looking then WAP-4 [hope not a criminal statement to railway fans ;-) ] .. really cool looking and should be used in passenger trains as well..
in case of white and green brothers , WAP-7 and WAG-9 , both look equally cool but green looks a bit better, say 0.1% better ...