I love dot mani's.  For this one I used L.A. Colors "Summertime" for the base coat.  The polka dots, which can be easily done with a dotting tool are China Glaze "Coconut Kiss" (that is the dark purple) China Glaze "Designer Satin" (which I am holding) and the white is Orly "White Tips."  I have had the Orly "White tips" for so long that I have no idea how old it is, but it still works :)  Like I said, I love me a polka dot mani!!