Somewhere I saw a pair of burgundy Konigs (I think that was the brand anyway, it was either konigs or petries) a few years ago. I don’t know how well it’d go over to wear those around, but a black coat with burgundy lining/piping/collar and either a burgundy or black cap would look sharp.
I inherited a medium brown coat. I replaced the leather buttons with brass ones. I think it’d look really good with dark brown helmet & boots, and white or cream breeches. The coat is over 60 years old & the store it came from has been out of business forever, but if you keep an eye on ebay brown boots show up all the time.
Last fall I started a dress coat using the SuitAbility pattern. It’s going to be a medium/olive green with brass buttons and light green lining (I originally wanted to make a dark green pinstripe or plaid coat with pale gold lining, brass buttons and some gold piping on the collar & pockets… but I saw the olive fabric & had to get it). Unfortunately the pattern was a little to difficult to finish in a weekend, so it’ll just sit around unfinishished until summer break.
Even sticking with blues, there’s so many options what with the pinstripes, plaids, houndstooths & herringbones, solids, in french, navy, and every other shade of blue. Someone’ll probably post a link to the dressagedaily(?) article with the photo of the lady wearing a light blue coat on the bay horse. If you find a hunt coat that really works & fits, you could always have it altered to hang longer. Plus, a lot of people prefer double vents because of how it fits over the saddle.
I think I’ll keep by black & white outfit, and just add bling with the stock pin, hair clip & browband. Otherwise I’ll have to buy a new horse to match each show outfit.
ETA: I think it’s RJ Classics that has a gray plaid coat with pink lining & piping at a local tack shop. That with white breeches, black boots & either a dark gray or black helmet … mmh hmm