while the "current bg palette" value here is never read in jackpot (right), it is read in dian shi ma li (left); the diagnostic and statistics screens both load it and push it onto the stack, presumably to pop off and restore later. (presumably because i have not found evidence of it doing this yet.)
the palette definitions are also different: dian shi ma li has three pointers to its sets of background colors, while jackpot has seven pointers ... in the order "0, 1, 2, 2, 2, 2, 3", the second entry doesn't seem used.
