Yellow rooms

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.