Design Templates

This lets the user chose their own color scheme, fonts etc. and apply it to the site. Eg.

Using something like this -

To Enable something like this (using the Black scheme) -

(The items aren't very clear because I saved it at very low quality JPEG. In real life, its very clear).

To to this, you would save several schemes in a CSS file or put them as strings in an include file. Then you would just need to save the scheme name that the user selected to a new session variable and then implement the right CSS style on the page.

As I mentioned you could let the user chose a font, font size or even layout templates as well as color.