Sometimes when you deal with textboxes you may need to specify more information than the description. The TextBox Watermark extender is just the control you need.

This article will show an example of how I used the control to provide users with feedback about the extra preferences that a customer would need in order to enter information in the preferred way. Also, in this example we show how to emphasize the importance of some input elements by associating them with colors. The whole project is attached for your own review.