Digital BW, The Print

I'm plugging away at learning BO printing with my 2200 w. Eboni and am 
experimenting with different papers to set the underlying 
warmth/coolness of the prints. One thing I've noticed is how 
dramatically the color of the paper appears to change with different 
light sources (color temperatures). One "natural" toned paper seemed to 
turn nearly pure white when viewed under a daylight temp. bulb while 
looking very creamy/yellow under soft white tungston (2700 degrees). 
So, I guess I should determine what color temp. is considered a 
standard for galleries displaying photographs. Is there a standard for 
galleries? Do they generally use quartz lighting? And, what sort of 
light fixtures and setup do you use for evaluating your prints? Thanks.

Michael K