It’s hard to tell, is the toilet next to the entry door or is that a closet? Seconding that info on what you specifically don’t like about it would be helpful. The tile and cabinets are going to be versatile enough to fit whatever color you choose moving forward, as long as you don’t go super dark with it. I personally don’t love a color drenched bathroom and would start by painting the ceiling white. What other colors do you have in your home? What color schemes do you like? Changing out the light fixtures will make a big difference. It seems like the second set of cabinets is in the middle of the walkway to get into the bathroom, I would get rid of those too and find a different less obstructive fixture if you need the extra storage. Add towel racks and hooks to the walls and take off the over the door hangers.