heyas; thanks for checking in, david.

 

   well... the SSS node was Skin 1. 
Skin 2 had the same result.
WholeMilk had some darker colour.
SkimMilk had some paler, rusty colour.

   still all discoloured. 

 

   i also tried taking out the colour for the HSV on the skin, and the base colour chip.  still blood drops.