That's a very easy question. It's usually made of green, white, red and black. Details here: http://ncusar.org/email_graphics/images/gcc-flags.gif http://ncusar

That's a very easy question. It's usually made of green, white, red and black. Details here: http://ncusar.org/email_graphics/images/gcc-flags.gif http://ncusar.org/email_graphics/images/gcc-flags.gif