Recreating Mii model colors in Blender

[BillyBnMOfficial]

I've been ripping the bodies from Tomodachi Life and I was wondering how to replicate some of the colors on elements such as the skin and clothing itself


  Swimsuit.zip (Size: 117.37 KB / Downloads: 81)

I split the color channels of the mask texture and all I know is that the red and green channels have to be used for the skin and the clothes respectively. I don't know what use the blue and alpha channels have.
               

[BillyBnMOfficial]

I figured something that works well actually.

   

I put the red channel (skin) over one part of a mix node and the green channel (clothes color) on the other part.

I still don't know what use the blue or alpha channels have, if anyone can figure it out let me know