color options for M.bath...

I am finishing up my master bath project and cant decide on casing and door color(walk in closet pocket door and water closet). Both are 3 panel glass doors, I plan to add frosted vinyl in the 3 panels.

Anyway, I have wall mounted vanities(walnut - hortizontal grain), limestone floors and 3x6 subway(edge to edge) on the walls. The wall color is BM Full Moon(soft light gray). The doors are not solidwood so I need to narrow down a paint color "range".  My choices to date are, 1) medium gray w/ white casing, 2) white/ white casing, 3) pulling out some brown tones from the walnut w/ white casing. Hmmmm

I typically have difficulty deciding on paint(who dosent). So I am hoping a few ideas, reasoning or "rules of thumb" for color ideas - it sure would save me on buying several $10 dollar quarts of paint.

thanks - in advance for your replies,

Chris