An example device for controlling a display includes a memory configured to store gray values of subpixels of a pixel and a display system communicatively coupled to the memory. The display system is configured to obtain a gray value for a first subpixel of the pixel from the memory and obtain a gray value for a second subpixel of the pixel from the memory. The display system is also configured to determine, based on the gray value for the second subpixel, an adjusted gray value for the first subpixel and output the adjusted gray value for the first subpixel.