Democratic presidential candidates Sen. Bernie Sanders and Hillary Clinton had their second debate since Sunday on CNN/Univision Wednesday night.

But on Twitter, a much more important debate was brewing.
Bernie Sanders's suit looks brown to me. @AaronBlake says its blue. Who's right?
What color suit was Sanders wearing?
Is Bernie Sanders wearing a dark brown suit, or is that my TV?
While some people complimented the senator on his snazzy brown suit...
Bernie rocking a brown suit tonight #DemDebate
Others saw black.
Bernie Sanders' suit is black, people. #DemDebate. https://t.co/jguFupFU3Y
Some people were so convinced the suit was brown they criticized his style...based on the color.
Does anyone under 70 own a brown suit? Bernie needs a stylist and a new suit. #DemDebate
Though some people were into it.
Bernie, I like the brown suit. Nice change from the uniforms candidates like to wear.#DEMDEBATE
The debate became more fiery than the debate between the candidates!
Is Bernie Sanders' suit brown? Or is this like you know what and it's actually yellow. #DemDebate
So what color is it? Plot twist, the campaign says Sanders is wearing...BLUE.
the suit senator sanders is wearing tonight is blue.
Is this possible?!?!?!
What color is Bernie’s suit? You be the judge.