Resolved Get Unshaded Light Color in a Shader?

Returning to the topic of cartoon shaders, is there a way to get an original color of a light affecting the mesh? For example, to make a shader where areas below 0.5 RGB intensity are assigned some arbitrary "shaded color", and areas above are assigned color of the light source?

 

Assuming you've already got a basic cell shader where light intensity has been computed (there's plenty of examples).
Then really all you've have to do is:

float3 col = lightIntensity <= 0.5 ? cellColor : _LightColor0;

 

_LightColor0 works as a charm; I needed to study built in variables more. Thanks!