Unity Blacksmith demo Volund/Standard Hair shader forces hair to black

I downloaded the Blacksmith demo to look at the hair.
https://www.assetstore.unity3d.com/en/#!/content/39941

The hair is always black. I looked at the Hair_setup.cginc file that the Volund/Standard Hair shader uses. They have the following line:
diffColor *= grayMask; (around line 132) ????
This is essentially forcing the diffuse color to very dark shade. I commented out the line, now I can set hair color to whatever.



I don't really know much of anything of shaders or the .cginc files. But this seems to work,I have to play around with it more to better understand how this shader works.