Yeah well Princess Peach's affiliation with pink does not justify purple having any level of superiority, even if it's the colour of the best soda. Purple, and grapes for that matter happen to also be the trademark of Thanos - who, although hasn't been thrown into prison like an ex-convict is responsible for multiple crimes against humanity, including mass murders, and the temporary eradication of half the population with the intent of it being permanent. Waluigi being cool and fashionable does not take precedence over him being the bad guy, his name literally meaning "Bad Luigi". Proposing pink is inferior because it is associated with Princess Peach and crime, is a cowardly, hypocritical argument, as purple is also associated with much worse crime, villainy and detest. So no. F^(k purple.