James Clerk Maxwell is one of the trinity of greatest physicists along with Sir Isaac Newton and Albert Einstein). I hadn't known that he took the first color photograph in 1861:
He was interested in color, and spent 6 years investigating perception of color, color blindness, and color theory. His research led to the idea of taking three identical photographs, where each photo was taken through a colored filter. One was red, one was green, and one was blue. Maxwell had slides of each made and projected this image at a lecture in 1861.
Maxwell may have been the last great theorist who was also a great tinkerer.