Re: Early color footage (1922 kodachrome film test)
Likely costs. It was probably much cheaper to use black and white film stock. Plus, this looks very experimental, and experimental usually means expensive to produce consistently.
Still, it's an amazing example!
According to a video on Youtube, this may be the oldest color film footage from 1901/1902:
I think heaven is what you make it. When I close my eyes for the final time, I hope to wake up standing in a grassy, breezy, sunlit field, a green tennis ball at my feet, and a little black lab, with a white diamond on her chest, running right towards me.