1. No idea, but I'd assume the black is decently safe and i've heard good things about the cases. As far as light hand sewing, i'm sure it will hold up fine as long as you use a nice strong but thing thread and a thin thin needle to keep the stress on the fabric minimum. I've sewn threw neoprene cases before, it works fine, just a little tedious if you want to keep it on the outer layer of fabric and not all the way through
2. they are pretty decent for the size i've noticed, but definitely lacking. If i were you i'd get a nice pair of desktop speakers to plug in when you are chillin... then again if you are going to college, you may be better off buying a cheaper pair of speakers (I got a pair of pretty decent ones here at a walmart for 15 bucks... i'm sure you can find an ok 2.1 pair) and invest the most of your money into a good pair of noise canceling headphones. This will make your listening splendid AND be great for a dorm and noisiness that comes with it.
3. no idea, but my new glossy SR macbook pro holds up pretty well in lighter uneven lighted conditions. I had a matte which was also good... perhaps a bit better for outside, but as far as the glare and such people complain about, i haven't had a real problem. It's actually kinda nice because glossy concentrates light and you can usually move the glare to an area that doesn't bother you if need be. I think you'll be fine 🙂 ... also, the contrast on the glossy is pretty nice. I am really liking this screen and apparently the macbooks are pretty close. ALSO... if you are used to a CRT i think this will be a nice change for you. LCDs are easier on the eyes/head (used to get headaches looking at CRTS too long.. becuase of the backlight and occasionally shakiness of them) and I think you won't lose much contrast... the screen willprobably really be impressive 🙂
btw... while there probably won'tbe much of an update at macworld, there is a chance that the macbooks will be getting LED backlit screens like the MBPs have... so you may want to wait for that possibility if that interests you. That does increase the battery life. 🙂
(still with me? two more!!)
4. not sure about the program you mentioned, but i've had no trouble sharing things with my roommates computers and our PC media center for our tv here with my mac and vice versa, I wouldn't worry too much about it, but i don't know much about other programs etc.
(and finally)
5. I honestly don't game, i'd check on the forums and search for the games you plan to play to see how people get then going on a macbook. there have been a few issues because of the integrated graphics. Guess it depends.
HAPPY MACING!