Where do all these "rural myths"about colour of hunt coats come from I wonder?! Personally I go by the advice my friend was given by Frank Hall, hunting outfitters in Market Harborough. She was told that both are correct but that black is more correct than navy (if such a thing is possible). I also think that I often see the "elegant older lady" in a black coat, and that is what I aspire to be, ultimately!!
Iv always known it to be under 16 wear a tweed jackect and then if over that age its your choice. Most hunt websites states what there hunt prefers.
Boots can be worn but tape them on well as you will loose them in the mud otherwise, i tend to avoid them as thorns and mud can get cought under and rub.
Always stock and spurs are ok although i have a mare that needs spurs but never hunting as sooo excited i dont even need my leg !
other than that just have fun your not judged so just just look smart and enjoy