The only place where there is an autofill option is under Freihandlinie(freehand lines). Once you have created a polygon with the freehand lines a box will pop up giving you the a variety of autofill choices. You can also get this box by choosing the polygon and then selecting Darstellung(Depiction). Hope this helps. There is also a way to change the color of the track, if that's what you want to do post back and I'll explain how to do that.
Ira