We had Sea Salt in our previous house and it's a beautiful color (light greenish gray). It would definitely brighten up your bathroom, but I think it might be too much contrast with your counter top.

the twilight is a nice shade. maybe do a wainscot of some type (tile or beadboard or even the wallpaper).

you need some sort of trim/casing around the window. It looks unfinished around the edges.

for a blind, do a lighter roman shade, or woven, or something that lets in some light.

Lisa! Thank you. The current vanity is definitely out, as it is quite dark. Open to suggestions/pictures for a new one!

Thank you, Hill Street Hacienda! I'm getting rid of the current vanity in its entirety. Open to new lighting, mirror, and vanity/pedestal...The only thing I do like is the pics on the wall near the toilet. The bronze faucet is nice, but I feel it's outdated so open to nickel/ss.

Hello Beth H! Love your tip on the window. Agreed, that a window trim would look finished and something lighter is better. Thank you!

couple of options to keep the dark, drama

even though this is a black ship lap, by using a neutral vanity w/marble top and some gold accents, it's anything but dark and dreary.

wainscot on the lower half. notice the window trim and blind. pedestal sink (if you don't need any storage) gives more room/space in a small bathroom. even though this gray is a dark shade (like yours), w/the white below it (subway tile would work too) it keeps a classic look.

notice the window on this one too,,,,(the zebras are a bit bold, but it works!) beautiful white casing w/woven wood shade, everything else is drama-city!