GL_EXT_color_subtable
https://www.khronos.org/registry/OpenGL/extensions/EXT/EXT_color_subtable.txt
GL_EXT_color_subtable

	void glColorSubTableEXT (GLenum target, GLsizei start, GLsizei count, GLenum format, GLenum type, const void *data)
	void glCopyColorSubTableEXT (GLenum target, GLsizei start, GLint x, GLint y, GLsizei width)
