Kind of a noob question:
I want to use the blend colors node to tint my material in a different color for each of several different objects. Do I have to create a new material for each different color, or is there some other smart way to do it?
you could try vertex colors
So after ours of searching, I finally found this explanation http://misterdi.cgpot.com/tutorial/ShadingSwitch/shadingSwitch.html
Basically you add an attribute to each object and then add a switch node and a ramp with the range of colors you want.http://misterdi.cgpot.com/tutorial/ShadingSwitch/shadingSwitch.html