… that coat should be referred to as ‘pink’
Most people in the UK talk of ‘red’ or ‘scarlet’. Old hunting images show many of the men, more than today, attired in red coats. Post ban, a lot of hunts no longer use them. However, a red coat is still generally worn by hunt staff, male Masters and, in some hunts, men who have been given their hunt button.
The Dictionary of Phrase and Fable, E. Cobham Brewer, 1894, gives the following explanation "The red coat in fox-hunting (or scarlet) is a badge of royal livery, hunting being ordained by Henry II a royal sport. " My more practical theory is just that red is highly visible against the colours of the winter countryside.
The story is that the name ‘hunting pink’ derived from a tailor called Thomas Pink and that ‘in the pink’ refers to both the jackets and to the healthy, energetic approach to the pastime that many hunters adopt. Keen foxhunters then might be said to be literally ‘in the pink’. Unfortunately, there are no historical records of any such person called Thomas Pink making coats and the association with foxhunting wasn’t suggested until long after the first references to pink jackets.
However, there is now a company that makes very good shirts called Thomas Pink http://www.thomaspink.com/