1. A computer-implemented method comprising: receiving image data that is indicative of a real-world field of view associated with a head-mountable display (HMD); analyzing the image data to determine at least one undesirable portion of the real-world field of view, wherein the at least one undesirable portion is undesirable as a background for display of at least one graphic object in a graphic display of the HMD, and wherein analyzing the image data to determine the at least one undesirable portion of the real-world field of view comprises determining a portion of the real-world field of view having more than a threshold level of ambient light; determining at least one undesirable area of the graphic display that corresponds to the at least one undesirable portion of the real-world field of view; and causing the at least one graphic object to be displayed in an area of the graphic display such that the graphic object substantially avoids the at least one undesirable area that corresponds to the portion of the real-world field of view having more than the threshold level of ambient light.