In addition to Pacific Blue I've been enjoying a new Essie shade called In The Cab-ana. It's a gorgeous blue-aqua that is similar to robin's egg blue. Despite being part of Essie's 2013 Resort Collection that came out this past spring, it is still available in many drug stores/Ulta.
To get the look below I used two coats of Pacific Blue then used my "dotting tool" (you can find one at Sally's) to apply In the Cab-ana on my ring finger nails and big toe nails as an accent. If you want a more dramatic look you can add more polka dots.