Lighting

Light acts differently to pigment colours. The primary colours of pigments are red, yellow and blue where as the primary colours of light are red, green and blue.

How coloured light effects coloured pigments
	Red pigment	Orange Pigment	Yellow pigment	Green pigment	Blue pigment	Violet pigment
Red Light	Fades and disappears	Becomes lighter	Becomes white	Becomes much darker	Becomes dark grey	Becomes black
Yellow Light	Remains red	Fades slightly	Fades and disappears	Becomes dark grey	Becomes dark grey	Becomes nearly black
Green Light	Becomes much darker	Darkens	Darkens	Becomes pale green	Becomes dark green	Becomes nearly black
Blue Light	Darkens	Becomes much darker	Becomes light mauve	Lightens	Becomes pale blue	Becomes light mauve
Violet Light	Becomes pale red	Lightens	Becomes pink	Becomes pale blue	Darkens	Becomes very pale
Neutral colours (black, brown and greys) remain almost the same under all lights, apart from a slight change in depth of tone or shade.

http://www.hsc.csu.edu.au/entertain/industry/core/lighting/3220/information.htm#light_mixi

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