When doing interior design it is necessary to think of the house as a totality; a series of spaces linked together by halls and stairways. It is therefore appropriate that a common style and theme runs throughout. This is not to say that all interior design elements should be the same but they should work together and complement each other to strengthen the whole composition. A way to create this theme or storyline is with the well considered use of color. Color schemes in general are a great way to unify a collection of spaces. For example, you might pick three or four colors and use them in varying shades thoughout the house.