One of my favorite details about the Persona dancing games is the fact that all of the protagonists' respective first dances have a move reminiscent of the way Personas are summoned in their games
The most obvious is Makoto's finger gun in Mass Destruction
Then you have Yu crushing a pretend tarot card at the very end of Specialist
And finally Joker ripping off his mask in Wake Up, Get Up, Get Out There
Buggy sure does love to wear red for someone who constantly proclaims his undying hatred and resentment towards Red Hair Shanks
Sure, it can be argued this is part of his clown motif to go with his red nose, but if Buggy truly hated Shanks like he claims he does, he would have done all he can to avoid the color red because it would remind him of his best friend.
Buggy incorporating red in his wardrobe reveal a subconscious desire to be with Shanks again because their younger days were the times he was truly happy, even when he believed himself to be in Shanks’ shadow.
Because no person who wears their partner’s signature color every day and grabs at any chance to talk about them and turn vulnerable so many years after their separation would truly feel nothing for someone they spent almost half of their life with.
Buggy still loves Shanks just as Shanks still loves him, even if he is in denial and won’t admit this fact to himself or anyone else anytime soon.