Royal Inspirat Theme is a theme that combines light blue and white to show a clean and friendly desktop. It reduces the space occupied by the taskbar. Besides it is very similar to the Royale theme designed by Microsoft.
It is very beautiful, and it offers you something similar to MacOS theme too, for example, it mixes the title bar and menu bar by using light blue giving the window a very compact look.
If you want to change the look of your desktop and you are searching for a good theme, Royal Inspirat Theme can be a good choice, give it a try, it is free.