And sure enough - it's extremely easy to see that the fireworks coming from the London Eye look exactly like the European flag.
It really is the spitting image, with the centre of the Eye turned blue, and the pods around its edge lit yellow, appearing to show the circle of 12 gold stars that adorn the centre of the flag, which represent unity.
Was this the most epic act of trolling at the expense of the Brexiteers ever undertaken?
Needless to say, people on the internet had many opinions on the matter.
Some likened it to the Queen, who is thought to have sent a pro-EU message with her choice of hat.
@aljwhite I'm waiting to see what the Queen wears for the state opening of parliament...
— Gisele with one el 🇦🇷🇫🇷🇮🇹🇬🇧 (@Gisele with one el 🇦🇷🇫🇷🇮🇹🇬🇧)
Theresa May ain't going to be pleased when she sees this...