colourize

/ˈkʌləraɪz/
verb
  1. Alternative spelling of colourise; to add color to a black-and-white image, film, or photograph.
    • They used a computer program to colourize the vintage footage.
    • She learned how to colourize old family pictures as a hobby.
    • The museum displayed colourized versions of historical photographs.
Synonyms
What does "colourize" mean? | whatsthatwordmean | whatsthatwordmean