Is that his real color?!

Don't tell me Brad Pitt dyed his hair grey for his role in the new film War Machine! Dude's 54 -- that's his natural look, no doubt.

Brad's doing what every hot actor's doing right now -- making a Netflix film. War Machine will debut on the subscription service May 26. It follows a U.S. general's rise and fall in commandeering the war in Afghanistan -- with a bit of a sarcastic tone. Left-wing commentary on what Trump's "war machine" might look like? Watch it and judge for yourself ... and feast your eyes on that silver fox!