def get_color_name(color_int):
	"""Gets a human readable name for a traffic sign color.

	Args:
		color_int: ID of traffic light color (specified in styx_msgs/TrafficLight).

	Returns:
		A string corresponding to the color name.
	"""
	color_int_map = {
		0: "RED",
		1: "YELLOW",
		2: "GREEN",
		4: "UNKNOWN",
	}
	return color_int_map.get(color_int, "UNKNOWN")