Tracing study: Line art - Overall, the inner lines are around half the thickness of the outer lines.
Implying that the spot light is slightly green. The character isn’t affected by the green light, at least not around the red areas. However, the clothing shines and aberrations in the shadow is affected. The grey part is also slightly green.
Figuring out clothes shadows:
Darken:
Can’t get the same color saturation
Multiply:
Can’t quite get the same shadow colors on the clothes (But able to achieve the shadows on the grey parts).