Planet seen dropping from sky completely vertical changing colors.

While walking my dogs late Thursday night, the sky was clear as usual. I normally look for certain constellations during these late night walks. I noticed that Mars was extremely brighter/closer as usual. Then I noticed the star changed its color to green. The color alternated from red to green then started to drop from the sky, descending completely vertically until I could no longer view it from behind a home (street level). The drop was rapid in a straight line which seemed impossible for a jet to accomplish unless it was in a nose dive crash. I pulled out my cellular phone and recorded the descent.