Do you know Yayoi Kusama's "Dots obsession"?.
This japanese artist uses polka-dots in many of her works. What she says about : "...a polka-dot has the form of the sun, which is a symbol of the energy of the whole world and our living life, and also the form of the moon, which is calm. Round, soft, colorful, senseless and unknowing. Polka-dots become movement... Polka dots are a way to infinity."