With just some small changes the dark and boring bathroom looks different and fresher. I choose green as the pop up colour and put a green towel and a green plant in the bathroom. I also changed the shower curtain with a white one which has green grass imprinted on it. And I sewed some green fabric leaves on the window curtain.
In addition, I made some cute decorations as an eye catcher. For example a painted frog on a small flowerpot. Or, a tree made out of cardboard and painted in green.