Or psychedelic. Or one big acid (gel?) trip. That is, according to a fan-made movie poster highlighting Portal 2‘s wide array of colors.
The poster is highlighted by Chell in her orange / white jumpsuit, red lasers, blue and orange gels, the pink-hearted companion cube, green vines, and GlaDOS’ central yellow light.
Portal 2 isn’t as white as you thought it was, is it?
Portal 2 70s style movie poster [Tristan Reidford Art via Reddit]