There are several other colorized versions of that same photo online, all with very different color choices, so I wouldn't be too sure about the accuracy of TFA

There are several other colorized versions of that same photo online, all with very different color choices, so I wouldn't be too sure about the accuracy of TFA's version: https://www.meijishowa.com/photography/6451/190102-0009-pp-buddhist-priests https://www.meijishowa.com/photography/6451/190102-0009-pp-b... https://sekiei.nichibun.ac.jp/KSA/en/detail/?gid=G0203359 https://sekiei.nichibun.ac.jp/KSA/en/detail/?gid=G0203359 https://www.album-online.com/detail/en/NDAzZGUwMA/two-buddhist-monks-their-way-monastery-buddhism-priest-c-1870-alb9824891 https://www.album-online.com/detail/en/NDAzZGUwMA/two-buddhi... There's also more information about the exact version from the article here [1], although it doesn't clarify whether the photographer and the person who colorized it are separate people. 1: https://sova.si.edu/record/fsa.a1999.35/ref484 https://sova.si.edu/record/fsa.a1999.35/ref484