A lot of places will carry tv's but computer monitors are tough to find in a local store and most people buy online. The best thing to do is your research and reading reviews and feedback to get a good idea of a monitor you might go with.
I know it may be hard to do but most monitors are black anyway and there are a few different colors but monitors don't have a lot of color variety.
I bought my monitor based on what I was looking for in features , resolution and screen size. I also read all the feedback and looked for as much info as I could find. The 30" monitor isn't cheap by any means but I bought it sight unseen because I knew I was going to like it based on the features , screen size and resolution , and it's black.