The magenta color is much like that green on the majority of chrima keys out there. In the past blue was most used and back when they recorded mk1 scorpion outfit was enough to digitally replace its yellow parts. As tech and spare money advance, they could build a better studio and better clothes. Since they would replace its colors for a lot of tones, it would be better to cast the original clothes with a tone easily replaceable like magenta.
@@Budd999 about the winning stance I could only imagine that is because no other player this kind of eternal win position. It would look weird I guess. No one keeps laughing or moving like that. The original reason could be due to memory restrictions, cutting some frames of animation... and by the end they realize it wasn't necessary to delete these but the game was already done.