Even dark grey helps save battery on AMOLED displays: https://www.xda-developers.com/amoled-black-vs-gray-dark-mode/ https://www.xda-developers.com/amoled-black

Even dark grey helps save battery on AMOLED displays: https://www.xda-developers.com/amoled-black-vs-gray-dark-mode/ https://www.xda-developers.com/amoled-black-vs-gray-dark-mod... Also, there's been conflicting research if blue light is actually harmful