What am I missing? How is this incorrect?
I'm genuinely curious, I'm not super clued into SG.
I am no supporter of KOs, but I use the following image to best illustrate the differences between the original SG Optimus color scheme (which the KO on the left uses) and the changed color scheme first introduced by the official SG redeco of MP-10 (pictured on the right):
The logic behind the original color scheme was basically to take the traditional Optimus Prime color scheme and make it look decayed and corrupted, with the red becoming a reddish purple, the blue becoming a dark bluish gray, and the light gray becoming dark gray (almost black), plus some gold and light green highlights for additional flavor.
The MP-10 redeco instead made the reddish purple a bluish purple, the dark bluish gray into a turquoise blue, lightened the black-like dark gray back to being closer to the original light gray of the normal Optimus colors, and darkened the gold and green highlights into more urine-looking yellows and greens.
This altered color scheme has since become the standard SG Optimus deco going forward, used on both the Selects figure and the upcoming MP-44 redeco: