gagan010602 The colour scheme is a personal preference. I don’t like the pitch black theme, for some reason it hurts my eyes if I look at it for a long time, also the pitch black background makes it harder to read on direct sunlight and shows more reflaction.
On the other hand it saves some battery. As it varies from person to person they should give an option to select which one users want to use instead of completely change it.
The following screenshot is from OxygenOS 14.
