The Lightbringer series by author Brent Weeks.
The type of “magic” in this fantasy series is unlike any other that I know of. Light can be split by some people into it’s individual colors, 1st book is The Black Prism, and those colors are able to be used/cast in a physical form with each color having specific properties and effects on the person that has the ability to use that color. Green is wild/free, red is anger/impulsive and so on. The prism, god chosen representative, is able to use all colors without limits. Murder, spies, politics, love, plot twists, magic…it’s got it all.
The reading is fairly easy and the story is easy to follow. This is, I think, the 4th time I am listening to the series. All of Brent Weeks books have been good…but something about this series is great.
https://youtu.be/jibvu9BHV_k?si=Q80rb2tB_Cz0TdWM
Totally not book related but your comment made me think of it… Good episode on colors.