Abstract: Disclosed herein are embodiments of a method and system for generating modified display data. One embodiment takes the form of a method, carried out by a display controller, that includes receiving display data having defined therein one or more received-display-data regions of respective pre-defined color values, and further includes generating modified display data based on the received display data, and also includes outputting the modified display data for presentation via a user interface. Generating the modified display data based on the received display data involves, with respect to each defined received-display-data region: using the pre-defined color value of the received-display-data region to select a visual effect based on configuration data that maps various pre-defined color values to various visual effects, and applying the selected visual effect to the received-display-data region in a corresponding modified-display-data region in the modified display data.