There can be little doubt about the impact that can be made by Bohemian bathroom designs and the fact that this is not a style that is used that often is an absolute tragedy. You just have so many options with this style of bathroom and as long as you follow a few basic rules there is little chance of you not managing to get that wow factor that you are looking for.
With the Bohemian style you can afford to be quite bold with the color scheme, so if you want to go for a daring purple or a vibrant blue, then feel free as it is all about being allowed to express yourself. If you do not feel like a block of color covering the walls, then how about a section of tiles, even if they are on a piece of furniture, where they are bright or with a bold design as it will still work spectacularly well.
Go ahead and have fun with it and see where it leads you.