AMOLED color scheme

I use neochat on android. It has light and dark color schemes. I have an AMOLED screen and want to use a full black color scheme. Is it possible to load a local color scheme downloaded from KDE store on neochat android? If yes, then how?

Debates and arguments about “Is an AMOLED color scheme good? Is it actually needed? KDE’s dark color scheme is already dark enough” aren’t welcome and considered hostile.