There is a color on each Japanese driver’s license: green, blue, or gold.
For the first 2 or 3 years of driving in your life in Japan, it’s green. In the next renewal, you get a blue one. After that, if you are a great driver for 5 years total (from the first issue), you get a gold one. But if you are not great driver you get a blue one. You could get a blue one from a gold one if you do traffic violations (It depends on what you violate).
Having a gold driver’s license has benefits: if you have a gold driver’s license your car insurance becomes cheaper. And it’s not known much, though you can get a discount at some hotels or restaurants because of having a gold driver’s license. Isn’t it nice?
P.S. Animals are not allowed to drive a car in Japan! The pictures are made for fun.