It’s a reference to the fact that the original Zelda cartridge for NES was gold

I remember reading somewhere that he actually painted the ceiling in a standing position

https://www.history.com/news/7-things-you-may-not-know-about-the-sistine-chapel

Lots of fun facts

One spoonful calms you down. Two spoonfuls help you sleep. But three spoonfuls and you’ll go into a sleep so deep you’ll never wake up.