Your comment raises the question of our biases toward anything that counters an accepted reality. In fact, color film was used during WWII but not widely due to cost and availability of processing. Robert Capa shot many rolls of Eastman Color 35mm movie film stock which he sent to Life in New York for processing. The idiot in the lab thought it was B&W and dipped the rolls in D-76, a B&W developer ruining all but a few frames of the churches around St. Lo. I'm not a big fan of colorization as a general rule since a choice of color or B&W should be made long before the shutter is tripped. Post-processing transformations might interfere with the original photographer's intent. Photography is an art form, after all.
