Color of Background
If Using Occlusion Integrator, turn this on
Number of steps to quantize diffuse lighting
Color to step to
Scale the Toon Diffuse ramp: if you're finding the original "full lighting" is too dark, scale this up to 2,4,8, etc. Check the NPRtoonDiffRamp AOV to visualize.
Min for min-max remap of stepping. Check the NPRtoonDiffRamp AOV to visualize.
Max for min-max remap of stepping. Check the NPRtoonDiffRamp AOV to visualize.
Gamma for toon diffuse ramp. Check the NPRtoonDiffRamp AOV to visualize.
Step to Albedo Color of objects instead of Blacks. Still uses Blacks, but as a multiplier on the Albedo Color, so switch Blacks to a grayscale value.