Yellow color is associated with friendship, happiness, warmth and caution. It is one of the primary colors like red and blue. We see this color on traffic lights as it indicates caution to all drivers on the road. The color of yellow is one of the most popular colors in the world, and almost everyone is familiar with this color and what it represents. “Yellow wakes me up in the morning. Yellow gets me on the bike every day. Yellow has taught me the true meaning of sacrifice. Yellow is the reason I am here.” See below for some yellow wallpapers.