DISCLAIMER: You must use a Nougat ROM that fully supports OMS/Substratum theming! If on March or April Oreo Versions, you need to build the layers you want to apply, FULL REBOOT and then enable the layers you built before rebooting. You may get errors if you are still on Marshmallow. Use at your own discretion on a samsung device! Does not work correctly as far as I am aware.