Click the little black box at the bottom of the toolbar, then choose your preferred color. If you are copying another character's color, use the eyedropper.

Pick a foreground colour and off you go !

just click the box in the bottom of the sketcher and you can change colors. hope this helped

Okay, if you're using black, there will be a black box in the left bottom corner. If you're using another color, the box will change into the color you're using. Click the box (no matter what color it is) and all your problems will be solved