Turning DOBOT Magician into a multi-color printer with 4 extra stepper motors


Dear community,
I am not enginner but I like 3D Printing, and now I want to be able to print with 4 different colors.
Since DOBOT Magician only has 2 extruders (two stepper motors), I would like to add 2 additional stepper motors more, to be able to extrude more colors.
Does anyone have some hints how to do that?
How can one connect more stepper motors to the DOBOT Magician?
I already bought 2 stepper motors NEMA 17.

Thank you in advanced! :wink: