So, I've decided this is official Duochrome week, so make sure to enlarge the picks this week to see the details. And to start us off, is one of Chelsea's awesome colors called Tropic of Cancer.
I guess your'd call this one a multichrome. It flashes purple, blue, green and a hint of gold. Just look at the bottle color:

and in the direct sunlight, you can see all the colors, blue and green are strongest and you get a bit of purple, the gold seems to loose itself on the nail, but the bottle shows it off nicely:



Thanks for looking!