I recently did a small project for a client which was just a series of colored boxes with quotations from their clients in them. I created two style sheets, one called "quote" and one called "names".
To do this, create the first colored box and style the text the way you want it. Then, with the text selected, go to Window>Type>Paragraph Styles and click on the create new icon (looks like a piece of paper folded on the corner) and give the style a name.
When your client wants to see a change - a different font, different alignment, different color, whatever, you change it once in the style sheet and it changes it throughout the document for you. A big time saver, and much more accurate than doing everything by hand - and by human memory!