I picked a few polishes from the new OPI California Dreaming Collection for Summer 2017 for a skittle mani. See swatches of the full California Dreaming Collection here.
Starting with my pointer finger, I used, Time for a Napa, Excuse Me, Big Sur!, Barking Up the Wrong Sequoia and Feeling Frisco. In case you are curious, I wore Excuse Me, Big Sur! on my thumb.