In the seventh picture there appears to be a white horse, but if you didn't know that Zhukov was riding a white horse I don't think anyone would see it.
Funny, but Stalin was not a good horseman and was afraid that he couldn't control the horse during the parade, so Zhukov led the parade on the white horse.
The original film was shot in color, but the pics posted above are screengrabs from video tape, fairly easy to tell
from the overlapping frames in the high motion sequences.
I've never seen the complete film, only a few clips that were used in the TV series Russia's War: Blood in the Snow, from which I grabbed the above frame..
The May 7, 1945 Victory Parade was also noteworthy for the first presentation to the Western Allies of the JS-III heavy tank, quite an advancement in tank design.