In case you didn't know or realize yet, the cosplay skins for Cassie & Jacqui say Sub-Zero & Scorpion, but choosing the P2 color for each turns Cassie's Sub-Zero into Rain, and Jacqui's Scorpion into H.Smoke. Nothing big or breaking, but just a reminder. Check out the screenshots I took last night:
Pick that version of that costume and go to any stage. The Kove would probably be the best example point.
She shines brightly. Compare the shine of the material on it and compare it to the the both of Cassie's and her own P1 color.
It's a Khrome costume.
I'm not surprised seeing as how folk data-mined the game a while back and found all the holiday tower rewards, with a Khrome background being one of them.
I mean, you can even tell by her pants, which are a metallic shiny grey and not black(though she has some black arm straps on and the lower part of her shirt inside of her vest is as well, and the most obvious, the big black stripe on top of her shiny grey cowl)