Law 1: Thou Shalt Not Mix Colors in the Presence of Pastels. (Deuteronomy 5:3)
Law 2: All Yellow Shall Be Represented by a Minimum of 4.3 Times the Amount of Red in Any Given Color Scheme. (Ezekiel 23:7)
Law 3: Black Shall Be Used Only for Borders, and Only When Necessary. (Leviticus 2:1)
For more laws, see Colorful Conundrums
Or, if you dare, Whimsical Logic