Chanel icy blue polish dupe?

Remember when I told you about Chanel's limited edition nail polish for the coming winter?

Well its not even out yet but I hope that I already found a dupe for it... it's called 'vintage blue' by Avon and I bought it on eBay. And the nail polish addict that I am, I also got 'urban grey' by Avon which seems like a really nice faded greyish white. Great colors for the winter I say! Anyone who has experience with Avon polishes?

1. Avon - Vintage Blue

2. Avon - Urban Grey