A display controller displays, on a display device, a color to be adjusted used to adjust a display color, and a plurality of candidate colors which define a first color range including the color to be adjusted, all of which are instructed by a user. A two-phase flooding algorithm is utilized to initialize the core variables within each class along with those variables needed to be initialized before the core variables. Mitigation actions may be taken in the event that the filling cycles exceed a predetermined number, or in the event that other system integrity monitoring indicates that mitigation is in order.