From a customer e-mail:
Can you please tell me the closest color that Noriko has to Jon Renau's 14/26S10?
Sure, no problem!
That color is Nutmeg-R. The color is very similar.
The biggest difference is that the rooting on the 14/26S10 is a lighter brown color than the Noriko rooting, which usually tends to be a medium brown on these blonde colors.
Nutmeg-F is also very similar, but the roots are a bit more dramatic since this is one of their gradient root colors.