What nymph was cursed to only repeat the words of others?

Echo

What are the traditional Christmas colors? What animal is recognized for carrying water in its abdomen to survive long dry periods? What reptile can famously change its skin color according to mood, temperature, and environmental factors? The mask used in 'Scream' films is based on what painting? If two angles are complementary and one angle is 45°, what is the other angle?