I think this is the blogosphere's favourite little bottle of nail polish right now, and for good reason! 'Rainbow Connection' is from the OPI Muppets collection (the rest of the shades/swatches can be found here) and a lot of the colours are quite hard to track down already! I got mine from eBay in the end for around £9 with shipping.
The swatch has Models Own Juicy Jules underneath which is what I was wearing when the bottle arrived in the post. I was so excited to try it that I put it straight over the top! I tried to cover up most of the previous product though so I don't think it affects it that much. The nice thing about this polish is it can be applied alone as well as paired with other shades. In my opinion it looks really sweet over a pale pink (think natural) as it hides the transparency, and looks great over black polish too. Also if you pair it with another shade you won't have to use as much either.
I'm absolutely besotted with this polish. I'm thinking about buying a bottle or two for backup as I've used quite a lot of it already! If you can't find this maybe Deborah Lippmann's Happy Birthday will do the trick, apparently they are basically the same thing bottled! I just think it's so perfect, lovely chunky gliter and goes with everything!