As far as physical descriptions, this depends on the character. If they have a stand-out feature, it's mentioned here and there. For instance, every so often Harry pushes his spectacles up his nose, or his hair looks "oxblood red" in the low light. Ellen[FONT="] "looked like a fine china ornament for the mantelpiece". On a few occasions, the MC noticed Everett's clear blue eyes. Sometimes the clothing stands out: I describe Uriah wearing his usual brown jacket and Augustine wearing his favorite, battered old top hat.
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But in general, I use body language and facial expressions to show who characters are. Things like smiling crookedly, or picking up someone's gloves and handing them back as if to say "don't worry, I still love you even though you lost the race" . . . these give a much better idea of a character than hair or eye color.
Sometimes, I'm plain old vague. I introduce June this way: "Both men turned to see a fine-boned, plain girl with an apron on." That's about as much description as she gets.
All of the above is from my current WIP, which has a much stronger romantic element. My previous WIP was very sparse with physical descriptions; it was pretty much all facial expression and body language. I wouldn't use so much physical description in another type of story.