AU: Everyone is born seeing black and white. You start to see colors when you first kiss your soulmate. Dan and Phil get completely wasted at a club and wake up seeing colors. Neither of them remembers what happens.
update from the author, 2 years later:
this shit is cringy and rushed as fuck i'm just warning you guys now i started writing this when i was 14 please pardon 14 year old me because i'm sure she's sorry for the things she has done