So for grey skies, I have grey nails...or are they more like pewter? This is China Glaze Awaken.
Awaken is a gunmetal grey metallic polish that is a dream. This polish is so opaque you can get away with one coat. I used two because I am a two coat kind of girl. The formula was pure awesomeness! It pretty much stayed put...no issues here. China Glaze did a great job with this one. I'm pretty sure it would be great for stamping.