I believe someone has said it in the UCLA film archives.
EDIT: Yep, looks to be there:
The last entry is:
"ADDITIONAL PHYSICAL DESCRIPTION: B&w work print of color film. Squeezed image (scope print source). NOTES: "Missing insert," titles throughout. A7-162-30 "
Most interesting, I didn't know that. However I believe you have to go there in person to watch it. (if I understood correctly this is what Grant did). But someone must have a color VHS copy, since excerpts are on YouTube, but I've never found anyone who had it.