What colors are more gentle on the phone screen in terms of battery savings?

Question

Monitors

Hello colleagues. The question is: what colors of phone screen themes are more or less economical for charging it?
1. Black, like on Lumia.
2. Bright, colorful, like on Samsung.
3. White and gray, like on the iPhone.
Thank you.

Answer 1

It looks like this very roughly:
On the LCD screen, colors do not matter, the energy is mainly consumed by the power of the backlight.
There is no backlight on OLED screens, so the area of ​​​​the pixels involved and their brightness matter, the fewer of them (and the darker the circuit as a result), the less it eats.