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Ice/Cobalt(Or Blue) works fine for me. Either that or white/teal are aesthetically pleasing with the armor I have, and that's enough for me. Black/red is only mildly annoying when it's someone named "XxXZooperEpikSkillzSniper1337MegaProXxX" (I really don't think anyone would pick that name, though... Just an example ._.) or some random mess of characters like that, and even then I don't really mind. People have their tastes and if they like their videogame Supersoldier avatar to be, in your words, "Dark and cool", they are entirely free to do so.
Rarity is best Pony. Yes, I'm a Brony. No, I'm not gonna try to get you to watch the show or dislike you if you don't. People can like different things.