Pictures, specs, Reel sizes, play times for the VTR in 1963 Ampex Home Entertainment Center:
http://www.labguysworld.com/Ampex_VR-1500.htm
Perhaps the 1500 was factory modified to do color like the Pro version model 660 ?
It would make sense given the color receiver - and big price tag.
One of the most lavish consumer products of all time.