To add colors to a black-and-white drawing, using colored drawing equipment.(verb)
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Use "color in" in a sentence
"Amid the palm fronds and the blue and gray swirls of color in the marble columns were the slot and racehorse machines, ringing with light, their dull pewterlike coin trays offering silent promise to the glad at heart."
"Exploring the importance of color in marketing, KLM devoted the March 1998 issue of Holland Herald, its in-flight magazine, to the color blue."
"The hills would be a soft golden color in the summer, Grand-père Alphonse told us."