How can I mark squares with a different colour?

I saw a GM marking squares with different colors, like red for attacking squares and blue for defensive squares 

I know it's right click to mark  red, but couldn't find the other

From https://support.chess.com/article/606-how-do-i-use-the-live-analysis-board

Squares

The members (owner and students) can mark any square on the board with a red color by right-clicking on it. Ctrl+Right click will produce a green square, while Alt+click will produce a blue square.

thank you buddy

cool

Wait you made a mistake Ctrl+Right click makes a yellow square and Shift+Right click will produce a green square.

No.

It's right click for red , ctrl+RC for yellow, shift+RC for green and alt+RC for blue.

on mac you get an extra

imac*

control for plus option = blue

ctrl + right click for yellow and alt + right click for blue

how do I do the green tile it doesn't work for me all it does is open the mouse menu like copy paste cut etc.?

If you're on Firefox, it doesn't allow websites to remap that option so it's not possible.