Script was:
gout=imagesource("gout.tga").flipvertical.converttorgb32
cap=imagesource("jsc.tga").flipvertical.converttorgb32
mask=gout.levels(240,1,240,0,255).showgreen
stackvertical(stackhorizontal(gout,cap).reduceby2,fuse(gout,cap,mask))
Fusion plugin is here.
DE