This is my current polish that I am wearing and I love it..
MAC -Varicose Voilet
This polish was from the Dame Edna collection so is unfortunately unavailable now.
It is a beautiful lilac -purple shimmer with blue undertones as you can see more in the second picture.
This was 2 coats not quite opaque but not far off, the consistency is nice and just glided on the nail and dried quickly.