I have finally achieved a non-root (since most folks either lost the privilege of using the theme engines, or can't/won't prefer rooting their devices) solution for AMOLED Discord Theme on Android.
This is based off the solution provided by u/POPstationinacan
I have implemented this. Though it is a bit clunky as of now. The Panel with Servers and Channels is not completely black. I will work towards a fix on it.
But here are some screenshots!!!!
x The Power That Be x
Update: Link for Download!