I am speaking from a rag rug business that I sold. You need to have a high contrast of dark surrounded by an abrupt change to light. That will catch your eye. I'd take that dark brown and surround it with the bright yellows, then take the oranges and let them fade out, first lighter then next not so lighter, then to next daker then the greens. The bright high contrast of dark brown and bright yellow will catch your eye. But this is just my HUMBLE opinion. Marcia