UE4: Cel Shaded post process material. How to add colors to light sources?

Question

unreal engine

Has anyone experienced Cel Shaded or Toon effects?
There is a nice article blog.theoroy.com/2017/04/27/anime-look-cel-shading... Have
a look there.
Here I am attaching the resulting post process material.

The post-processing material works fine, except for one annoying thing: the color of the lights is NOT displayed, instead all the bulbs shine white. =(
As planned, it is planned to place several point lights on the level that will have different colors, but at the moment any light turns into white in post processing ....
I would mix colors there ...
There are several light sources in the screenshot, and they are different colors, and here is the result.

Does anyone have any ideas on how to mix colors in there?
I've been scratching my head all day.