Orange fireball slowly moved across the sky at sunset

Just prior to sunset a coworker radioed that there was something burning in the sky.   When went to see a bright orange glowing object was moving from east to west at a speed that to me appeared to be standing still.  Two other objects were observed in line of sight but dismissed as aircraft.
 It was not the object that I noticed when I looked but the change in color of the sunset.  I observed the sunset just a few minutes earlier before I had gone into a building which was a vivid gold color.  When I was called out to see the object the entire western horizon had been muted to a purplish grey haze.  After the object was no longer in sight (went below horizon) the bright vivid colors of the sunset returned.
 Shape was oblong-globe with a short trail left behind.
 Speculated that it was possibly a sayalite that had reentered the outer atmosphere  A coworker photographed the event at 16:46 hours, I photographed the sunset at 15:03 hours to show contrast between the grey horizon during the event vs the normal sunset after the event.