@mserena: thanks - got it working in 4.14, of course 
In your example video how did you setup your red/green material? … just using a lerp function between colors an applying the MF output to the alpha input of the lerp?
@mserena: thanks - got it working in 4.14, of course In your example video how did you setup your red/green material? … just using a lerp function between colors an applying the MF output to the alpha input of the lerp?