Purpleheart Does Not Begin Bright Purple Freshly cut Purpleheart can initially appear dull grayish-brown or muted brown-purple. Exposure to air and light develops the familiar violet color, while extended aging and ultraviolet exposure eventually shift it toward deeper brown-purple. Surprising takeaway: A freshly turned blank may become more purple after machining—but that brilliant stage is not permanent. Limiting direct sunlight can help slow its eventual darkening.