See screenshot of my implementation
In the previous blender versions, I would often create a backlight effect by using a color ramp and normals modifier in the default material settings.
The idea is to create a backlit effect or in some cases a color-based-on-angle effect that you see in some car paints.
I believe it is judged relative to the camera, so I have been unable to reproduce this effect in Evee.
How is this implemented?