Getting color in the screen

Questions
1

Hello,
It is possible to get a certain color on the screen? An example of when I might want to use it is when your making a drawing app, the user could touch the color they want to use.
Thanks!

2

using setContext(), draw it to an image, and have your draw() just sprite() the image to the screen. When you want the color, it’s just image:get().

3

Oh. Thanks. It’s not very obviouse.