http://www.thaigraph.com/thread-1235-1-1.html

https://photofleem.com/2020/10/photoshop-make-colorize/

http://www.pantips.com/webthaidd/photoshop/webthaidd_article_786_.html

http://socialintegrated.com/photoshop_hand-tint_a_black-and-white_photograph