In Page 31, it's shown that the two Doubts leeching off the Fear die off once it glares at Hero. As if show to show that fear is stronger than doubt or that the Hero won't have any doubt about how dangerous a Fear is.
Negative RGB is associated with blue roses. A blue rose symbolizes mystery, which is fitting because of how little we know of his negative form, it can also be associated with unfulfilled longing or wishing to attain the impossible, both of which may sum up his feelings regarding his overall goal.
"Heroes wear green" may seem like a throwaway line but in actuality, it's a nifty piece of foreshadowing. Assok and Tinker are both green and they're implied to be previous heroes and Toby and Dial are revealed to be working for Hate and were heroes once before throwing in their lot with her. This even extends to RGB himself who during his fight with Hate is wearing a green suit, confirming that he was a hero himself. During Chapter 11: Ensemble, his outfit changes to black, brown and teal (i.e a shade of green) before settling to various shades of teal and white. Even when RGB changes his shirt colour to black during his refitting, the teal still remains.
During RGB's battle with Hate, his suit is well fitting because he's a hero. Early on in the story, he tells Hero that he's the worst monster and throughout the story he wears an ill fitting suit, as if to imply that his role as a monster doesn't fit him and that he's actually supposed to be a hero.
Tempers turning into Griefs actually makes a lot of sense. Both of them have lava veins, and anger is one of the Five Stages of Grief, also associated with losing one's temper. RGB even tries to tell Hero that if you break them too many times or don't make up for it afterwards, they'll turn into Griefs though he's interrupted when he tries to explain this to her initially.
Unsurprisingly Click's role as hero ends with him losing his temper by stepping on one and failing to put it back together, causing it to transform and then kill him afterward.
During Page 490, RGB explains to Hero that his plan was to prolong the story to delay the end of the world. During the bottom right, he says that Hate dealt him a losing hand and he agreed to play before changing the game. Hate's cards are all Aces which is a good hand for poker. RGB's cards are 2 spades, 2 hearts and a club, which is a losing hand in a poker game but works much better for solitaire. In other words, RGB has changed the game from Poker to Solitaire, changing his losing hand to a winning one instead.
Hate has been established to reconstruct characters into their current forms, ToBy was stitched back together with his own nerves, and she has scissors as a visual motif. That would basically make her a seamstress.
When asking the Butterfly what she is, RGB mentions that only Fears and Hate can create schisms, and reasonably assumes that The Butterfly is either a Fear or Hate herself. This makes sense when you remember that Fears are monsters made up of sharp looking edges, and Hate is associated with scissors, which can used to create splits and tears in materials such as paper or fabrics.
Fridge Horror
Toby being stitched back together with his own nerves is utterly horrifying by itself. To make it worse, Hate reformed Toby as a doll who can't do anything on his own and is forced to serve her. No wonder Toby is so bitter at RGB considering how brutal his death must've been as a previous hero.
Dial himself doesn't have it much better. While he may be chipper about his lot in life, he has to live knowing that Hate can listen in on his conversations and that she can erase him any time he does something to displease her.
It's implied throughout the story that RGB had taken many different heroes under his wing, with Hero being the latest one. However for all the heroes that we still see alive, there must've been several who didn't make it out alive.
Just what did Click do as a hero for RGB to conclude that he made a hideous mistake and that Click was on the path to destruction?
It's no wonder that Click and several of the previous heroes hate RGB, considering he effectively set them up to fail just so he could delay the end of the world a little longer. Just imagine how they felt when Hate resurrected them and remolded them into their current forms.
