Fukken nice. I love that one.
Well. Lights in M2s.
In the header:
0x11C - nLights - number of lights
0x120 - ofsLights - offset to lights
at [0x120]:
nLight entries of this structure:
Offset - Type - Description
0x00 - uint16 - Type
0x02 - uint16 - Bone ID
0x04 - float[3] - Coordinates
0x10 - AnimationBlock (float, float, float) - Ambient color
0x2C - AnimationBlock (float) - Ambient intensity
0x48 - AnimationBlock (float, float, float) - Diffuse color
0x64 - AnimationBlock (float) - Diffuse intensity
0x80 - AnimationBlock (float) - Attenuation start?
0x9C - AnimationBlock (float) - Attenuation end?
0xB8 - AnimationBlock (int) - usually 1
You have to find the light that is the global "black" one. Then change the colors to something blue or whatever.