From what I just watched over YouTube, the lighting affects the entire model based on the map around them, and whether or not some object affects the lighting nearby, like gunfire or an explosive barrel.
It's just a simple tinting of the colour on the model from the looks of things, which is well within the PS2's hardware capabilities.
It's just a simple tinting of the colour on the model from the looks of things, which is well within the PS2's hardware capabilities.