No shutters - wrong for the clean lines of your lovely ranch home, imo I think it is a great idea to take the bushes out of the planters. That will open up the full height of the windows, which will make the body of the house feel taller and work better with the strong roof line. A trellis mounted between the two windows on the left, filled with something climbing and pretty, would be a nice way to break up the long expanse of brick there. The door color does seem a brighter red, and perhaps something rusty would be better. Hard to tell what the real effect is from a distance, tho, in the pix you have posted. I would look for a more modern light fixture for the front door. The carriage light says colonial to me. How about something like this? kichler transitional bronze wall light I think the light has a cleaner line, but not too modern, and echoes the multiple panes in your windows, not fighting with the circles in the front door glass.

Please forgive in advance my honesty, but I don't think the sliding barn door is a good use as a bathroom door. The won't seal closed the way a regular door would, and people in bathrooms need that privacy. Also even if it wasn't for a bathroom, that wall doesn't look wide enough. While you may find a door in the sliding barn door style to fit, the style really is for a bigger wall. But the privacy thing is the one to really focus on.

I love Navy Hale, such a great color. And I think any color barn door could work. I would look at your lighting and other colors in the room and look at different stains that might work with the barn door. I don't think navy and white are always nautical. I have lots of navy and white and nothing with a nautical theme. Here are some lovely houzz ideas with different wood options maybe these can help you think about your space... Okay not Navy but ooooo so pretty mixing it up a with the pretty horse and the simple window paned door not navy but a pretty blue with this dark wood I love this below with the warm wood and the beautiful blue!

I like the color of a charcoal roof for your house, and also charcoal shutters. The door should stand out on its own, and could be almost any bright color of your choice. Rusty red. Dark teal, orange, etc. A very pretty house.