Anyway, here's Mary Beth's pick.
Russian Navy has been swatched and talked about a lot so I'm not sure what more I can really add to it. In the bottle it looks kinda purple, on the nails it looks like a shimmery, shiny, navy blue. RN is highly pigmented with blue shimmer. The shimmer gives it a lit from within sort of look. I really love how dark and deep this colour is. I really wish I had gotten a sunshine pic, but it was snowy all yesterday.
I had read somewhere that if you did three coats you would end up seeing the purple, but I didn't see any purple. Although I never got a chance to see it in sunlight. So I have no idea. You're good to go in two coats. This is three with top coat. So shiny. Goes on really smooth.