if absolute ceasetation of consciousness isn't "everything goes black", then i don't know what it looks like
how do you perceive or imagine non-existence or 'nothing' at all? usually when i think of nothingness, i think of seeing only pitch black. the color black is by default the lack of visibility, when you see space, you see an absolute void of blackness, in other words: the absence of light. materialists usually describe the non-existence of consciousnes as the state before you were born, well i've never 'experienced' the state before i was born, i've never "seen" nor experience what it looked looks like before i gained consciousness. materialists describe unconsciousness (such as being put under general anesthesia) as being in a dreamless sleep with a complete absense of time, you're being sedated for surgery and you won't even feel it happening, you go through a mental timeskip not knowing 3 hours even passed. maybe it's because the braincells are still alive but dormant for the moment. death in the materialist perspective is described of lack of awareness, sight, hearing, feeling, thought, and sense of time for all eternity, at what point does eternity in this context end? by 10 seconds, 1 million years might have already passed, what color will you see for the rest of eternity once you experience 'nothing'?