I have three empty cells where a user can enter any of the following values. A1 = Blue, A2 = Red, A3 = Green. If someone enters nothing, I need cell B1 to remain blank, if someone enters only one value (either Blue, Red, or Green), then I need B1 to return the word "color", if someone enters more than one value (Blue and Green for example), then I need B1 to return the word "colors".

Thanks for any help!