Since as far back as I can remember, I don't like being in yellow rooms. And when I mean yellow, I mean pretty much every shade and hue of yellow.
I get this strange sense of unease and prefer not to be in them.
It isn't really a big deal, it's more of a preference.
The odd thing about it is I don't know why.
I haven't had any traumatic experience in a yellow room, I was never held hostage by pastel terrorists nor have any oomph-loompas threatened to withhold candy from me if I didn't spend an hour staring at yellow walls.
Hence, I assume it's aliens or the CIA or the Russians that caused this.