I need help getting some color images into a drop down list. I want to be able to click a cell and a drop down list will show a "red light" "green light" "yellow light". Not using conditional formatting.

IE. cell A1 shows a value..I want to go into excel see this value and then determine what kind of status I want to make it in Cell A2..this would be the traffic lights. This "status is subjective and cannot fall into conditional formatting.