When Designing a Room Mix Different Color Wood and Style to Give Interest to a Room. Matchy Matchy is Out. When you try to Mix the Same Color Wood it Looks like you made a Big Mistake. Go by the Piece of Furniture you Like. Don't be afraid to Mix Different Periods of Style. Don't be Afraid to Mix Gold and Silver. Mix Different Elements and Textiles. Big Box Stores and Catalogues Sell in Sets and don't Give as Much Thought to a Design Project like a Professional Interior Designer will do. Photo by Phyllis Rose