I'm not a fan of MAC eyeshadows but when they have an interesting colours that come out (and almost sure that it will be hard to dupe) I'm more willing to buy. Robins Egg fall in that category. A beautiful mat blue-teal really pigmented. My first look with it was on the lid Guerlain aqua from the quad summer collection 2009 Summer Slash on the lid, then on half of the lid i wear MAC Jealousy Wakes and in the crease i wore Robins Egg.
Then on the top of my crease Early bird (from the same collections) and as a highlighter I used MAC Mega Metal shadow Peek-at-You Frosted yellow white.
It was colour full but really nice!