Light coloured wall and floor. Timber and black accents. For a super high ceilings use a picture rail to add things like whiteboards, business certificates and decorative images. The rail anchors them so they don't get lost in the large wall space.
Minimalist style is one of the crowning architectural achievements of the century. Minimalism is charming in almost any space. Simplicity and elegance in furniture and decor choices. Check out for more amazing ideas.