@Aurorastar
From what I understand, atm he can only see colours based on his emotions.
Anger triggers red and fascination (I guess - idk what to call it) triggers pink.
Whichever feeling is stronger, influences the intensity of the colour.
However he can "recall" a colour by thinking about it, maybe? That would explain why then he can see the pink over the red 😅
I mean, it's a plot device, but I'm not sure they thought too deeply about the rules around it, besides "oh, he needs to have feelings to see colours, yes, that's brilliant" 🤷♀️