one in cordovan to match my shoes. My favorite is cordovan with a dark blue suit.
Cordovan isn't a color. I know... I know... everyone says it is, but it isn't. It just so happens that burgundy colors are what cordovan leather is usually dyed so the mistake is a common one.
Cor·do·van /ˈkɔrdəvən/ Pronunciation Key - Show Spelled Pronunciation[kawr-duh-vuhn] Pronunciation Key - Show IPA Pronunciation
noun 1. a native or inhabitant of Córdoba, Spain.
2. (lowercase) a soft, smooth leather originally made at Córdoba of goatskin but later made also of split horsehide, pigskin, etc.
adjective 3. of Córdoba, Spain.
4. (lowercase) designating or made of cordovan.
Socks MUST always be darker than trousers.
I agree with your other two points, but I think you can have some leeway with socks. I say it's ok to match socks to shirts or ties if you prefer. Be a bit fun with it unless it is a very formal event.
My unsolicited opinion. Value - priceless, really.