stuff i swatched: LATE Skinny Dipping (With Friends): Wet n Wild Mega Last Milk // I would do this with one of those "special effects" top coats from Revlon.I'd do the one that provides the pink sheen.
You can use any shape. It doesn't have to be a bunny. Just trace a shape or cookie cutter. This would be cute for any holiday, just use an appropriate cookie cutter to trace and cut out the shape, then whatever yarn works best for that holiday!