The way I look at it, you're going to barn that would drive many people bonkers (you *have* to use a leather halter? Really?) to one that sounds fantastic.
I've gone that opposite way. And, luckily, back. I "grew up" at a laid-back stable, surrounded by friendly people who did everything from dressage to herding cows to endurance, and it wasn't the cleanest or neatest-looking facility but the people were wonderful and the horse care excellent. From there I went to New England for university and kept my horse at the college barn, which was a little bit like your old barn but not as anal until it got a new barn manager my junior year. She set out rules similar to the ones you illustrated. So I spent the next two years rebelling and testing enforcement of said rules by getting rid of any and all solid coloured saddle pads and acquiring a collection of ones like those in the pics on my horse's profile (a few examples of the many), keeping all clippers and clipper-like devices as far away from my horse as possible, threatening dismemberment to anyone who *thought* of chopping her mane off, and buying a traffic cone-coloured halter (which sadly, over the years, has faded to the colour of an ill salmon). As I'd come from a background of doing what I wanted so long as it wasn't outrageously dangerous or stupid, I wasn't going to tolerate levels of micromanagement dictating how long my horse's mane was and such. Hence I went out of my way to give it the 'two fingers.' I think I got away with it because the barn manager knew I'd be gone in a couple years anyway but I doubt I was ever her favourite person.
In other words, you are now free to buy the most garish, hideous, neon halter you can find!