If you can cast your mind as far back as 2015, you'll remember the debate on THAT dress that seemed to divide opinion among every person on the planet.
From your Aunty Susan, to Kim Kardashian and Taylor Swift, nobody could decide whether it was white and gold or black and blue.
Now another colour debate is dividing social media - this time centering around a shade of 'posh paint'.
After upmarket paint brand Farrow & Ball shared a photo of its 'Blue Gray' paint on Instagram, shoppers rushed to query what colour it really is, with many believing it looks more like a green shade than anything else.
The picture, which depicted a painted door behind an adorable Mountain Doodle dog, was captioned:"It's hard to look beyond @tuskerthemountaindoodle here but the beautiful #BlueGray door almost had our attention, we promise! This relaxed shade has an almost magical quality of gently shifting between blue and grey depending on the light and time of day. #FaBFrontDoors ."
After spotting the post, shoppers were quick to throw their ten pence in, with many questioning the colour description.
"It looks green to me," said one critic.
"I agree looks green," added somebody else.
"I'm seeing a sage green colour!" exclaimed another Instagrammer.
A fourth disgruntled colour critic chimed in: "It’s green babes."
But despite shoppers' claims it's green, Farrow & Ball insists the shade is a grey blue.
Farrow & Ball's official description of the paint reads: "With its subtle mix of blue, green and black pigments, Blue Gray creates the most relaxed of rooms that feel as if they have always been there. It is a cooler, more weathered version of French Gray and has the same almost magical quality of gently shifting between blue and grey depending on the light and time of day."
If you want to test the paint for yourself in the flesh, you can order a sample pot from the Farrow & Ball website for £4.50.
Alternatively, if you're willing to look past the colour description and actually fancy doing a bit of Blue Gray decorating, larger tins are available in 5L, 2.5L and 0.75L sizes.
FYI, it's green.
