colorize
US /ˈkʌl.ə.raɪz/
UK /ˈkʌl.ə.raɪz/

1.
colorear, dar color a
to add color to something, especially a photograph or film that was originally black and white
:
•
They used digital tools to colorize the old black and white movie.
Usaron herramientas digitales para colorear la antigua película en blanco y negro.
•
The artist decided to colorize her sketches to give them more life.
La artista decidió colorear sus bocetos para darles más vida.