1. the process of adding color to black-and-white film, photographs, or video using digital or chemical techniques
Usage: present participle of colourize; primarily used in film and photography contexts; British spelling; American equivalent is 'colorizing'

Examples

• The studio is colourizing classic films from the 1940s for modern audiences.
• Colourizing old photographs can reveal details that were lost in the original black-and-white images.
• The director decided against colourizing the vintage footage, preferring to preserve its original aesthetic.
• Advanced software has made colourizing historical documents faster and more accurate than ever before.
• Many film purists object to colourizing black-and-white movies, arguing it changes the artist's original vision.