A lot of people don't put a lot of thought into wood computer desks. They figure they just need a nice place to sit down and get work done. If that's you, then maybe you should think about all the cool options that are out there. You can really turn the desk into something more than a workstation. It can be a piece of the furniture that really accentuates the rest of the room. Of course, if you're looking into different desk options for an office, most of this won't be a concern to you. However, it's still pretty helpful to know what your options are.
The classic roll top types are still a fan favorite because they're so excellent at covering up a disorganized mess as well as keeping important files secure. However, you can get locks on just about any model so don't let that be the main selling point for you. The next most popular model is the classic L shaped type. These are perfect for fitting into any corner, and they're also great as a two person type. You can have a computer on one part and a printer on the other, or whatever you want to do with it. Some people will actually put a hutch or credenza on one half and not the other. It's really up to you. There is also a U shaped model available, though they're much less common.
If you're setting up a home office, then it's going to be a really important decision for you. You want to make sure that you have a nice ergonomic chair; otherwise you'll end up hurting yourself or falling asleep. This can't be stressed enough, as you won't get much work done and you'll end up wasting time and money. So be sure to put a lot of thought into it and don't take it lightly.
As for colors, you can take your pick. You can paint it white, or just leave it the way you get it. You might like a dark cherry, or you might want to paint it another matching color. Either way, just make sure it doesn't stick out in the room. Otherwise you won't get much work done there. And keep in mind that the contemporary thing to do is add an armoire next to the unit. It adds a really nice balance and allows you even more storage. If they're matching or connected, that's even better.
Mark J Sinclair writes about wood computer desks [http://computerdesksupply.net/] and ergonomic chairs for your home office.