LayeredMaterial colorLayerEffects are broken

[jailln]

LayeredMaterial colorLayerEffects don't work anymore with realistic lightning.

Context

Steps to Reproduce

1. add { realisticLightning: true } to the GlobeView constructor of the vector_tile_3d_mesh.html example
2. open the example: the basemap is all black:

Possible Cause/Fix/Solution

Commenting these lines in the example fixes the issue:

                effect_type: itowns.colorLayerEffects.removeLightColor,
                effect_parameter: 2.5,

Using removeWhiteColor produces the same effect, indicating that these effects don't work anymore. Also, this happens with realisticLightning on.

When fixing this bug, it may be a good thing to document these effects in the API doc at the same time.