Photography was a black and white medium. It was very fragile and an expensive process. It stayed like this for awhile.
Photographs started being hand painted. This was a delicate process and it was used or 20 years.
France was generally where the first colored photograph was made. The color could only be seen against a blacklight.
Leopold ushered modern photography by inventing the Kodachrome. This was a process that used film processed by labs.