Nobody on Twitter can decide what colour tennis balls are

Here we go again

First, it was that dress and then the runners, and now it’s all about tennis balls. The optical illusion that has everyone on Twitter going mad right now is all about those fluorescent balls and we're totally thrown. It’s been a point of contention for years, however, Deadspin recently revived the debate by simply asking one question: “What colour are tennis balls?” A question we never knew we needed to ask is now the question we need answers to immediately. And we’re not the only ones – it seems like everyone on Twitter is torn when it comes to a decision on this.   https://twitter.com/alexis_levinson/status/976132548542771200?ref_src=twsrc%5Etfw https://twitter.com/ryanmheckman/status/976131939156594688?ref_src=twsrc%5Etfw https://twitter.com/ensquaredx2/status/975865832050909184?ref_src=twsrc%5Etfw https://twitter.com/AdamBeilman/status/976134968480010240?ref_src=twsrc%5Etfw https://twitter.com/romasfinest05/status/976132151270920192?ref_src=twsrc%5Etfw https://twitter.com/delaneyanndold/status/975815880268550144?ref_src=twsrc%5Etfw https://twitter.com/audra_spiven/status/976132096015110145?ref_src=twsrc%5Etfw https://twitter.com/ensquaredx2/status/975870369784410113?ref_src=twsrc%5Etfw https://twitter.com/chendizzle/status/976148513682804736?ref_src=twsrc%5Etfw https://twitter.com/davidbauer/status/967340335432159233?ref_src=twsrc%5Etfw So, what is it you see - green or yellow?