Color mixing

[thyva]

When mixed, the primary colors-red, blue, and yellow- create secondary colors- orange, green and purple. mix red and blue to get purple. mix blue and yellow to get green. mix yellow and red toget orange.User needs to enter two of the primary colors. If anything other than red ,blue or yellow is entered, the program should display an error message. If they enter two of the same color, an error message should disply. Otherwise display the new secondary