Your regular reminder that being in the EU does not prevent a Member State from choosing the colour of its own passports. Here is the Croatian one, for instance. They retained this cover without inflicting massive economic self-harm, which is another option.
I’m still laughing.
And of course, just to add another comedic or tragic layer (depending on your mood), several of you have reminded me that the old passport was black or a very very dark blue. Looks like an emerging Brexiter cultural (civil / uncivil) war... https://twitter.com/ninjafairy2/status/1273149553735237632?s=21 https://twitter.com/ninjafairy2/status/1273149553735237632
The farce is strong with this one. https://twitter.com/mattgarrahan/status/1273218885433675779?s=21 https://twitter.com/mattgarrahan/status/1273218885433675779
Classic Brexit.