based on the stuff i've read about other ms pac restores/stenciling, probably a gallon of the blue, 1 qt each of the yellow and pink, and rattle can the black. spray some primer before putting down the yellow, otherwise you'll use a ton of paint trying to get coverage.
1 gallon will be WAY too much blue, but not sure that 1 qt would be enough, and price wise, a gallon is not much more than buying two quarts.