"that’s the new military grey bit, there. That’s the dowdy, old, nasty ocean grey bit, there. "

“…or was it the other way round?”

There’s a hidden division in your question, whether intentional or not. “Can” they do that. Do you mean “are they legally allowed to do that”, or “do they have the power to do that”?
In the former, no. In the later, possibly, yes.

FFS am I the only one here with a sarcasm detector? I may be British, but I don’t like to stereotype.

Any chance you could share some version of this list? For science

I hope your comment effects a correction.