From: Steve Shaw
Date: 23 Dec 17 - 10:04 AM
As long as my passport fits into my Mountain Warehouse pouch wot I wear exclusively for getting through airports, I don't give a stuff what colour it is. The intriguing thing is that my passport expires four days after brexit but I shall have to renew it long before then. Will I be "marooned" for ten more years, I ask meself?

We've already discussed this (back in October). And you gave the impression you wanted to retain your maroon passport for another ten years.
As I explained then: You can renew your passport at any time. When you renew your passport, time left on your existing passport is added to your new one, up to a maximum of 9 months.