Unscientifically, I swear the words "black" and "dark" have been used in like 60% of the posts on this thread. I imagine if this subforum met together it would look like a funeral procession.
I have a couple things that are black, and like the color - but if it's black, I'm wearing it more to make a statement than because I like darker colors. I like a clean, sharp black and usually something long sleeved rather than a t-shirt.
Casually, I more often have to choose either a put together, more traditional look or a looser and more relaxed one. It's usually a function of how I feel that day. When I'm feeling more serious and restrained, I'll put on a Polo oxford (of which I have probably over 15 different colors, ranging from neutrals to pastels) and maybe some chinos, chino shorts, or dress jeans - most of which double as choices for business casual (sans the jeans). When I'm more sloppy or relaxed, I like a good western shirt, sports shirt, denim shirt, or maybe a polo. I have a few t-shirts that I collect when I travel and wear around the house, but they're really pushing "casual" to a limit for me.
Athletic stuff is pretty basic (Nike, Adidas, favorite sports teams stuff, etc).
Someone asked about suits - I do like dressing up. For suits I stick with neutral colors, but think the fit (slim) is really important and, when I can afford it, have the suits tailored (it's 100% worth it). Aside from a few exceptions, I stick with white or blue shirts and rely on the ties for color (though a red tie is still my favorite). If I know the people I'm dealing with well, I sometimes mix in more playful ties or louder colors. There is a bow tie in my closet I have yet to wear, out of utter superstition that the day I feel douchey enough to put it on something bad will happen. But someday, it's going on.
Things I don't like: turtlenecks, sweaters, sweater vests, sweatpants, anything argyle, urban/streetwear, t-shirts (especially those with sarcastic and/or nonsensical words or phrases), the hipster look (beards, lumberjack shirts, dumb glasses), black on pale skin, anything "critter" (with animals or animate objects embroidered all over the place), big gaudy logos, things that match but match badly (such as, purple shirt with yellow logo, with yellow pants), baggy or boxy suits, short sleeved hipster button downs that button the top button, men's shirts that have flowers on them, knit hats, and many others.
