utterly love how much of chapter 5 is drowning in subtext about kris
in chapter 4 we see that dark worlds are influenced by the perception and desires of its creator, and then in chapter 5 the seven flowers are very transparently heavily influenced by not only kris' perception of the flowers but of themself.
kris is a human who wishes to be a monster (see: kris as a child wearing horns, their puppydog antics, their response to the shopkeeper in chapter 5 when they mention animal ears), so the flowers want to be human.
aqua is kris' troublemaking and penchant for violence and destruction (especially as a kid).
seth reflects kris' gender, and perhaps even their feelings or admiration for berdley(?)
yellow and blue could represent their relationship with justice and morality, perhaps even their relationship to the soul? (yellow and blue, like their light and dark world palettes) i could also see their relationship representing kris' own approach to love and attachments
green reflects how little they speak (and how we never really directly hear anything they say), as well as their status as a double agent, since green helps both kris and the flowers the entire time. also of course their shyness and inner kindness
orange is another one im not completely sure about, but if i had to say, probably their feelings of ineptitude as it relates to being a human, perhaps even some form of dysphoria. she probably also reflects kris' relationship to asriel (and probably dess) as their younger sibling
flowery is obviously based on asriel, especially given ralsei's initial reaction to him. i think it's really fascinating how flowery feels about kris, and i wonder if it's a reflection of kris' fears of what asriel might think of them now. his design similarities with noelle/the holidays were also pointed out to me which i think is really fascinating
without getting too much into the "secret flower", they're very obviously a representation of kris and the soul's relationship, though i think it's interesting the roles feel somewhat "reversed" here.
and then of course the flowers seeking asgores love is very obviously a reflection of kris' own desire to feel loved and recognized by asgore (and probably toriel, too, honestly), and their overwhelming desire to feel like they have a family again, even if it's found family