Tornado Skies is a medium dark grey cream with a green-turquoise, deep shimmer. In some angles and lightings it looks like a plain, but really nice, grey cream, in other lightings it has a green tone. Both colors looks great. But of course it is the shimmer that does it. As said it is not always visible, but still not too shy.
The formula is ok. A bit patchy first coat but smoothe after a second coat.
I thought this would be nice to stamp on, so I did. I used Lilypad Cayman Island Delight, Messy Mansion MM21, and I put on Gosh Matt Effect topcoat.