I meant in the reality Puce is from. It seems like an opportunity for some odd alternates that fit similar roles. I mean, Black in DC seems to be active negation of the Spectrum, but what about being a simple absence of it? Absorbing or reflecting the normal Spectrum? Apathy seems like a more logical Black to me, and having a more abstract Spectrum makes it seem like Life and Death fit less as White and Black as a result. Like, all the canon DC Emotional Spectrum powers are keyed to more or less concrete mental states, while the one Puce is from seems to be about concepts rather than states. You respect things, you have mercy on people, but you feel greed, you feel hope.
And Black is actually largely unrelated to the Emotional Spectrum. It's a side thing keyed to Nekron in particular that happens to be largely antithetical to the Emotional Spectrum, rather than an actual part of it. So in a topsy-turvy universe with a different Spectrum, it's counterpart of Nekron could be apart from the Spectrum in a less conflicting way. Or a differently-conflicting way, like the Black Light of Apathy being an eldritch thing that screws with how reality works quite severely by being an utter absence of the Emotional Spectrum. Nekron is what the Darkness Before the Universe saw as Life's interpretation of Death. What kind of being would be made from that force's view of Enlightenment's interpretation of Apathy?
Really, Nekron from Darkest Night is actually the result of a pre-universe force making something out of it's interpretation of Life's view of Death. Said force could have gone after a different concept, instead. Nekron is far from the only embodiment of Death in DC, after all. Hell, there's three different versions of the bugger.