“Trolls think fashion is stupid” is code for ‘trolls don’t prioritise individuality’ the same way “[t]rolls don’t have mail” is code for ’trolls lack freedom’; while Sburb offers its human heroes the opportunity to launch into adulthood by customising their looks to express their unique personalities, the trolls are seemingly taught from a young age to avoid this kind of thinking in order to streamline the process of playing Sgrub. So for Vriska to finally graduate from the black tee with her astrological sign on it would also be a significant symbol of growing out of her Alternian mode of thinking in that respect