Way back when at one of the FMIG meets in STL, Joe Collias showed a movie of Frisco and MOP stuff. It included a color scene of one of the Meteor 4500's at Grand Ave.
That video/film is available on Heron Video's "St. Louis Glory" (and noted: "From the collection of Joe Collias"). The film has quite a few Frisco runbys as well as MP and other St. Louis RR's. Tom G.