One of my favourite blues to wear is China Glaze Frostbite. It's a shimmery, lit-from-within blue. I find it to be a bit runny so you have to be more careful than usual during application, but it's such an incredibly vivid colour that I think it's worth the extra effort.
I was playing around with it the other day and layered a coat of Nails Inc Privileged, a blue/green flakie top coat, over it to make it even glowier. Then - as though that weren't enough - I stuck a couple of snowflake nail stickers that I found in my local Sally's on my thumb and ring finger.
Although not outrageous by my standards, the final design was the sort that made my parents give me a bemused look. So really, I consider it a success!