Five Houses (Sarcasm #10)

Colours were present since 40,000 years ago with Red predominantly used in cave drawings. With advancements, people created dyes of different colours from pigments.
In 1800’s, a Person wanted to prove his wealth by constructing 5 houses with same dimension but with different colors (Red, Blue, Green, Yellow, Purple). Paints were expensive that he spent hunderds of dollars in painting alone. He photographed them and framed so that he could carry it during his business trips and tell everyone about the dollars spent. Unfortunately, they all appeared black and white in the photos. Poor soul.

How did they shoot B/W movies or series? Would they paint the sets with different colours or wear prismatic aesthetic costumes? Should ask someone from that age !