C++ Please

Color Mixer The colors red, blue, and yellow are known as the primary colors, because they cannot be made by mixing colors. When you mix two primary colors, you get a secondary color as shown here: Red plus Blue Purple Red plus Yellow Orange Blue plus Yellow Green Write a program that asks the user to enter the names of two primary colors to mix. If the user enters anything other than red, blue, or yellow, the program should display an error essage and end. Otherwise, the program should display the name of the secondary color that results. Upload the source code ONLY