morphing lights reveal blazing fast craft in the suburbs

A friend and I were coming home from another friends house in Mundelein, she was driving and I was shotgun- as we were driving on Buffalo Grove road, I noticed a stationary object in the south east skies. I exclaimed "whats with the UFO?" jokingly, as we both look at the object it begins to morph into diferent colors-  these were not lights that you would see on a plane helicopter blimp or anything- not strobe lights and not LED's.