My favorite color is yellow. It's flashy, turns heads, and in a way I find it soothing. Do you like yellow things?
Yellow is between two primary colors on the spectrum.  They also have really expensive yellow light lasers.
You can get lasers made with yellow light? That's awesome! Why would you want yellow laser light though?
Don't know.  On computer moniters, yellow is produced by combining red and green dots.  Yellow is also the color on the traffic light, the color of bananas, egg yolks, and autumn leaves.
Whoa, you know a lot of things that are yellow. Hey, school buses, bumblebees, and lemons are also yellow, in case you wanted to add to your list!
Now you are thinking about yellow!  corn, canaries, daffodils, yellowtail fish, yellowfin tuna, and many species of trees like the yellow birch are classified as being yellow.