Goth isn't a personality - a personality are things like being funny, nasty, compassionate, kind, sweet, caring, stubborn, arrogant etc. We are still people and we all have different ones. People may have a stereotypical vision, for example people view scenes as being bouncy, bubbly and loud but then again they can be really quite or even mean because they're still people and what phase, subculture, trend, music genre etc they're apart of doesn't affect it.
In my opinion, that personality would be 'juxtaposed' e.g. Goths typically dress in all black, and are into the darker side of life, so a pastel goth is a contradiction, and therefore has a conflicting personality. Let me know if this helped at all? www.MrsBlak.com