GL_EXT_separate_specular_color
http://www.opengl.org/registry/specs/gl/EXT/separate_specular_color.txt
GL_EXT_separate_specular_color
	GL_LIGHT_MODEL_COLOR_CONTROL_EXT 0x81F8
	GL_SINGLE_COLOR_EXT 0x81F9
	GL_SEPARATE_SPECULAR_COLOR_EXT 0x81FA