Yellow is bright. Happy in a way. Yellow is the color of the sun on a toddlers portrait. It gives a positive vibe. How could yellow represent the sun? The sun is also bright. But it is not necessarily yellow. Why do people compare the two? Maybe it's because yellow and the Sun help people in times of darkness. But how can two ordinary things help someone? Just like the way any ordinary person can shine their smile at a stranger and turn their day upside down. Yellow is an ordinary thing. But when you take that ordinary thing and change the meaning of it, it can mean so much more.