color scheme; color design
Refers to the planned use of colors in design, art, film, or products. Often used in professional or technical contexts.
The color design of this movie is very striking.
I am in charge of the color scheme for the new website.
配色 refers more to the actual arrangement or combination of colors, while 色彩設計 emphasizes the planning and design aspect.
Compound of 色彩 (color) and 設計 (design/plan).