So. Here's everything that I used for the polka dots; Art Club Red, OPI A Roll in the Hague (orange), Julep Charlie (yellow), NYC High Line Green, Julep Ally (blue), and OPI Purple With a Purpose. The base is NYC French White Tip. I topped it all with China Glaze Fairy Dust.
It's bright, colorful, glittery...polka-dotty? I love it.