In the current Goodnotes application, it is only possible to assign the colors I want to use right now. But there are times that I want to use different colors according to the subject. For example, I like using [blue, red, green, dark purple] set when I'm taking history notes on the bright paper. But I like using [white, bright yellow, bright blue, bright green] when I'm solving math problems on dark paper. It takes quite a time to change all the colors I have on my screen whenever I'm trying to take notes about different subjects.

So, I propose making a personal color folder to solve this problem. For example, I can assign a folder "History" and store the colors I use on my history notes. This makes it much easier to change colors on different subjects.