i think this would take some more time, so are there bipole leds avaiable? cuz this circuit works like this i think
0V= led got power from the upper pin.
power rising to 12V= power fades to the lower pin(upper pin goes ground)
so i think youll need a bipolar led which is pin 1 red and pin 2 green or sumething
dunno yet, gonna find that out 4 ya