Lines drawn on the train appear to be bluish, though the pixels are grayish or purplish. Transformed with the two-color method.pic.twitter.com/EsuEXYpbD5
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Thank you! The rain has just started here for the day. I find your @twitter output facinating & you've just supplied today's rabbit hole! 


Once I found a wheel attached to an electric motor with green & red acetate holes around it in my Nan's attic. She told me it was what was left of my Grandfather's experiments in turning monochrome TV to colour in the 1950's. His use of 2 colours, not 3 had always puzzled me!
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