https://github.com/ITPNYU/ICM-2024-Code/wiki/Homework-Mimi-03#week-5
Reorganize
Added a function to switch the background color by clicking the mouse.
Long press the mouse to make the mouth bigger and the background to change color quickly.
https://editor.p5js.org/Xueyu333/sketches/zqTW2mikm
https://editor.p5js.org/Xueyu333/full/zqTW2mikm