In SmartThings there are various ways to get color…one is hue and saturation, and the other is to give hex code to a specific color. Alexa Helper uses the hue/saturation method. Here are the colors I typically use and their values. Let me know if I understood your question correctly and this gives you what you want:
colorData << [name: "White", hue: 0, sat: 0] << [name: "Orange", hue: 11, sat: 100] << [name: "Red", hue: 100, sat: 100] << [name: "Purple", hue: 77, sat: 100]
colorData << [name: "Green", hue: 30, sat: 100] << [name: "Blue", hue: 66, sat: 100] << [name: "Yellow", hue: 16, sat: 100] << [name: "Pink", hue: 95, sat: 100]
colorData << [name: "Cyan", hue: 50, sat: 100] << [name: "Chartreuse", hue: 25, sat: 100] << [name: "Teal", hue: 44, sat: 100] << [name: "Magenta", hue: 92, sat: 100]
colorData << [name: "Violet", hue: 83, sat: 100] << [name: "Indigo", hue: 70, sat: 100]<< [name: "Marigold", hue: 16, sat: 75]<< [name: "Raspberry", hue: 99, sat: 75]
colorData << [name: "Fuchsia", hue: 92, sat: 75] << [name: "Lavender", hue: 83, sat: 75]<< [name: "Aqua", hue: 44, sat: 75]<< [name: "Amber", hue: 11, sat: 75]
colorData << [name: "Carnation", hue: 99, sat: 50] << [name: "Periwinkle", hue: 70, sat: 50]<< [name: "Pistachio", hue: 30, sat: 50]
colorData << [name: "Vanilla", hue: 16, sat: 50] << [name: "Custom-User Defined", hue: 0, sat: 0]