The VG Resource

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

[attachment=15429]

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.
[attachment=15433][attachment=15432][attachment=15431][attachment=15430]

I figured something that works well actually.

[attachment=15438]

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