I have that same stupid tile in my shower! Not attractive but solid as a rock. Try using a curved shower rod to hide it. As for color schemes, find a nice shower curtain that you like and pull a wall color from that. Mud-toned blue, green or lavender would work. FWIW, light colors do tend to wash out in low light rooms so a mid tone might work better. And get some nice coordinating microfiber bath mats to hide the floor. Kilz (I think) makes a primer called Upshot to prime ceilings. It’s an aerosol that sprays straight up. HD has it. You’ll want to use that to prime the ceiling before painting it with any brand of ceiling paint. The ones that start white and turn punk are easier to use so you don’t miss a spot. How handy are you and your husband? That floor could be covered with a nice LVT or stone-look vinyl tile in a couple hours.

For a more modern log home you would pick colors the same way you would in a regular home - bring all your pieces together and draw a color out of them...if you are really feeling the country then you may want to be in sage greens, pumpkin, fall reds and things like that. I do agree - no need to paint before cabinets go in - don't rush... find colors you are drawn to and paint poster boards and hang them up and look at them for a week or so... Good luck!

Oh yes, a nice new light would be lovely. Even Home Depot and Lowes have nice choices for reasonable prices in lighting. Wayfair has a huge number of fixtures to choose from. I prefer ones with lights that shine downwards, but there are lots with lights facing upwards - that's really your choice as long as you get good light. Don't be tempted for any Edison style bulbs in the bathroom because in my experience they are often really yellow and that doesn't help anyone looking in the mirror trying to do makeup or shave etc if there is a yellow cast. I like this one which won't disappear against the wall. If you changed the handles on your vanity to match the dark or the bronze this might be nice but of course it depends on all your other choices. I thought this one was just a big different if that suits you. A little bit modern and industrial looking. Very classic and if I used this, I'd probably make the handles on the vanity match. you could also consider a new faucet in the same finish. For a floor pattern, you could likely do a hex stencil if it is small enough. I agree the existing pattern is going to make many stencil options not work for you. This particular one would allow you to paint small hexes throughout and then you could customize if you wish by adding a word like they've shown in the picture, or adding a border (that border could be the navy blue colour with the rest being white. Or here is another option where they've just used a plain hex in what looks a bit of a colour variation - that looks lovely as well. For your mirror, Home Depot carries kits so you can make a frame for your mirror. But someone posted on Houzz last week a place where you could order frames that are meant to dress up a mirror like yours and they were really nice looking. Worth doing a bit of research on that. Once you've decided on a flooring then that should inform your other decisions on wall paint colours. Would you consider a wallpaper or something like grasscloth on the walls in the bathroom. The grasscloth comes in some really gorgeous colours. Since it is a guest bath there won't be a lot use on a regular basis so I think you could easily choose wallpaper or grasscloth to bring in some colour. Look at these really gorgeous colours....if you went with a white floor either or these blues would be so lovely. But if you wanted to keep the floor etc as it is and used this taupe colour in the room along with your new white counter top and some bright white trim - that and a new light fixture etc might be all that is needed.

@kandrewspa thank you and I totally understand. I guess I am more looking for tips and suggestions on how to go about picking a color for the space. Your tip of a warm off-white is helpful. I was also guessing there might be some that know the color pallet and could ramble off a few that might work with the limestone. I have no problem trying several colors out to see what works best. I will definitely check out Almond Milk.