This came from a lost website where this skin was uploaded, but mistakenly colored as green instead of teal blue. I remember back in 2016, I downloaded the MCSM skins from that lost website (at the time, it was my only source) and used it on skins of my friends. I ended up fixing it to add the second layers to give it more detail. This skin was part of this mod linked down below. I wanted to repost it to prevent it from being lost to history forever, because I cannot find any re-uploads anywhere else.

https://www.minecraftforum.net/forums/mapping-and-modding-java-edition/resource-packs/2859259-minecraft-story-mode-armor-pack