Just a thought, do the demons from Devildom perceive colour different from humans? Like, as humans get older, they tend to see colours as more dull, and since children see colours more vibrantly, toy companies often produce toys with bright colours to catch a child's attention.
Demon Bro *shielding his eyes from the walls of bright colours*: Oh Diavolo, why are human toys so bright?!
MC: They're bright yeah, but I think you're overreacting.
So I'm just thinking, what if MC and one of the demon bros were in the human realm and walked back the toy isle, and the demon brother recoils at how obnoxiously bright the toys are.
i lowkey see this happening with Mammon while on a shopping trip teehee-