For a transitional kitchen, a bold accent wall color can bring a sense of balance and harmony to the space. Consider a deep plum or a bold teal to create a sophisticated and timeless atmosphere. The bold color will complement the mix of traditional and contemporary elements in the design, adding a touch of elegance and personality. Whether you choose to paint the wall behind the kitchen island or the area around the range hood, the bold accent color will make a statement and enhance the transitional aesthetic.