Claire's Yel seemed to be a big hit so I thought I'd mention a few more Claire's and Icing (a sister store) polishes. Claire's and Icing are in most malls in the USA, and polishes are usually buy one polish at $4.50 and get one 50% off. they also sell small sets of mini bottles of polish and single mini bottles separately. The formula varies but is generally fine and not hard to use.
I already reviewed some Claire's 3-in-1 polishes here, and Claire's Yel is here.
Claire's website: http://www.claires.com/
Icing Website: http://www.icingbyclaires.com/
Icing Roger That:
Claire's Meg Peg:
Claire's Blue Crush: