save state of color code district button

in the bottom right of the user interface there are three button - FIMS output, hex grid lines, and color code districts. for some strange reason the game remembers the last state of the first two buttons, but forgets the state of the last button if you load a game. this is very strange. it took awhile for me to even find the color code district button, but now that I know what it does I want all three of these buttons to ALWAYS be on