In drawn to life how does the 3 way switch work

First you must draw somekind of platform thingy before you can operate the 3 way switch. Then when you are done you see the platforms you drew on some kind of colored lines. There you see a switch. To operate it you must touch it with your stylus and then the circle thing in the center will light up the color which it has operated. If it is the wrong color, tap it again until you get the color you want. (Note: the color that is activated will move depended what color line it is. Ex: If you tapped red the platform on the red line will move. See the scenario?)