POV

I think it's just the way the artist likes to draw?

I think its not a bad way to interpret it even if the artist doesn’t draw it like that for that reason since children are able to see colour more vividly. Adds a nice touch to the story

Yees, It was already said before

oh it was? how so and when? :D

You can search on the authors account.
There a many posts there.
And in the comments the authors explain many times too.