Soft warm grey with copper shimmer
Covent Garden Ballet is a gorgeous soft grey with a nicely visible fine copper shimmer.
My swatch pictures look to be running a little warm, it's definitely not a super cool grey but maybe not as warm as it looks here.
This polish does run sheer - swatches are 3 coats with no top coat
Luckily this polish is still available from Nails Inc - it looks to have been relaunched as a 'Ballet Sheer'. Originally this was part of the 'A Listers' collection of four polishes back in 2012.
Nails inc describe it as being an iridescent pearl, I suppose that's what makes it look soft....