First of all, do you want to keep the wood tone on the walls OR go with a light color such as light blue or even white? Nothing brightens up a room and brings in the outdoors as these two colors do. If you go with white paint on the walls, I would suggest you paint the ceiling a neutral light blue to bring in the color of the lake and the sky. Then, you might add a bedspread in a royal blue and white window pane plaid with large white squares inside the royal blue grids and complete the look with sheets and pillow cases in the light blue of the ceiling and royal blue or navy blankets. Red or yellow in small accessories would make a refreshing accent for the room. A textured area rug in dark brown or dark gray might make a nice backdrop for the blue and white linens.

With that very dark wall, you will have a hard time reading your samples. You can prime the walls first, and then try much larger samples. You'll want to prime them anyway, to get good coverage over the dark color.

I was just asking for the same advice yesterday from this group... we also have an orange roof and brick . I went and found jungle Camouflage by Behr and the trim is a creamy white that I do not have the name in front of me. They look really nice against the orange. Someone also suggested bronze windows which we are considering along with our front door. The orange is definitely tricky .

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.