The nail wheel swatches show one coat of Moonshine over a white creme, a blue jelly, and a black creme.
Moonshine is a soft silver shimmer top coat, meant for layering over other polishes. Moonshine produces primarily a very light, silvery shimmer, but within the shimmer you can also see a little bit of iridescence, which reminds me of the natural iridescence of light on fresh snow.
Rather than offering sets, purchasing three or more bottles of polish from the Sun, Moon, and Stars collection in a single order will give a discount of 3.5% on all Sun, Moon, and Stars collection polishes in the order, which will be reflected in the cart under the line "Sun, Moon, and Stars collection discount."
The last photo shows what Starlight Polish 15mL and 7.5mL bottles look like.