Earth-sign Capricorn predominately has a love of natural materials. Their rooms tend to feature exposed stone, dark woods like walnut or petrified woods, and always an abundance of plants. They also have an appreciation of form and structure. Sage greens with hints of dark earthy browns and greys will appeal to them. Their furniture can expect to be made from natural materials too—woods over metals, with linens and cotton over synthetic fabrics. Natural light is essential for these signs, so floor-to-ceiling windows are the way to go for them. Best interior trend? Rustic.