It does kinda feel like its no oonger umbreon if its not dark but hell OCs exist so what the hell right?

I. personally, feel that the inverted colors look really good.~ No shade to Darqs, of course; we merely have a difference in opinion there. For me, Umbreons have always been best with their main colors as either black, grey, or white. Anything 'monochrome' if you will — the patterning and pattern coloration being where the best details come from. Safe to say, yours fits my bill in every aspect of what I like to see in umbreons!