I am putting 3 x 12" white subway tile in my tub surround. The tub is also white. The general color in the room is medium brown (vinyl tile floor with varying shades of brown, stained birch 4' wainscot on walls with light cream paint color above, oil rubbed bronze fixtures, darker gray/brown granite with white streaks). My question is what color to choose for the grout. I would like to use a subtle contrasting color to the white tiles so that the tiles show up better. What do I match it to? Pull a brown shade out of the floor? Try to match the wainscot stain color? Does anyone ever use shades of brown for grout? I mostly see gray in Houzz pictures. Thanks in advance for your input!