[Guest]

Mine for landlight is

Ambient 0.60
Diffuse 1.35

and for CloudShadows.mat is

[LightParams]
Diffuse 0.85

for the clouds (if you have Rus andrei cloud mod) it is:

[ClassInfo]
ClassName TMaterial
[General]
tfDoubleSide 1
tfShouldSort 1
tfGameTimer 1
tfSpriteLight 1

[LightParams]//Shine only for sprites
Ambient 0.75
Diffuse 1.25
Specular 0.0
SpecularPow 0
Shine 0.2