GL_EXT_separate_specular_color
https://www.khronos.org/registry/OpenGL/extensions/EXT/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
