I don't want to sound rude or unsympathetic, but the reason that you are on this woe is to loose weight and feel better. Which by looking at your stats you have done an INCREDIBLE job at. Whether you can turn sticks colors isn't really the point.
But..........you are in ketosis. Because you are loosing weight, it is most likely that your body is burning up most of the ketones for energy. As someone else stated previously, if they turned ANY color than you are in ketosis.

Keep up the good work!!! I know of a lot of people on this board who would love to have lost the weight that you have in only twelve weeks!!!