Would it be possible to add a gradient or falloff map in the specular channel, to create color shifts on the surface depending on the camera / normal angle? Even better it would be to allow a blend between the gradient and a texture map.
This would be very usefull for color shifting car paint, insect materials, coated glass, heated metal…etc.
A quite fitting example was already posted in the request “Opacity based on camera position”.
Thank you very much in advance.