RiT dye rather than paint

Well in this case they were dyed in yellow. Yellow to blue makes green, so the cab windows were unaffected, and the yellow wasn't strong enough to turn the red to orange. What ever the primary colors are( red, blue, and yellow) in combination with the base colors, will determine what is produced. (Purple, green, orange,), with various shades by strength with heat. There is also a neutralizing color remover dye too, so I suppose pink from red, grey from black, and so on could also be achieved, but I have never tried it.
It was you and I who had this conversation a while back, but I don't think I knew where my examples were at the time.