A skin graft even taken from the exact area adjacent to the site of surgery changes color over time as it’s skin in a new area that has to redevelop blood flow. It becomes thinner, smoother, loses pores and becomes whiter usually. Rarely grafts become thicker from contraction and swelling, and in some cases darker than surrounding skin. Lasers can be used to improve the contour of the edge of the graft or its surface, and can be judiciously used for color improvement.