Walking home from store and noticed a series of lights on the triangular shaped object which moved below clouds and heard no sound.

I had just left the local grocery store ( Saylor's Market ) and was walking home. I had just checked my cell phone before leaving the parking lot to see the time was 6:54 PM. I wanted to time my walk home. It was drizzling light rain and the sky was a pale grey color with lots of cloud cover. That was when I noticed an object which swiftly moved in the air above the road ( HWY 641 ) and sort of slid thru the sky with no audible noise I could detect. I would say that the lights on the object looked to be rows of lights that flowed from red to white to green very rapidly, similar to LED lights, they filled the entire triangle shape of the thing. The object was clearly below cloud cover and had a sharply triangular shape. I estimate the object to have been only several feet wide?