This is OPI Rainbow Connection part of their Muppet Collection.
This is so bright and glittery! and you can see just how glittery by the reflections shown in the following photos.
This is large and small glitter pieces with the predominate colour being silver, and then the rainbow of other colours in equal quantities.
Three coats gave full coverage and really blinged out my nails. Young children were especially enthralled by this, and the adults thought it very christmassy.