Is there any template that has options in the back end like what this guy is demonstrating? http://compojoom.com/blog/8-news/92-biggiesmalls-video-demonstration
That guy is good. If he can put some "color change" graphics on his template, his visitors can also change the aspect to what they want. That would be neat if he would use a variable color clickety. The purity template that is included with Joomla is similar, but with much less variation than what this guy created.
The type of setting you are looking for in the template are becoming more common now. Most of Rocketthemes new templates have these setting available. However this person has gone farther by the looks of his demo. Looks like he has made it easy to edit the templates CSS files right from the template settings. Excellent! We should see these type of settings in more templates now and in the future. It shows someone who has taken time to offer his customers something easy to work on.