Modifying the graphical properties of the portlets

Difficulty : Easy - Medium,
Require : CSS knowledge, adp understanding.

To change the portlet properties (title style or font, data layout) you can modify the class style in the css. However, I may understand the standard tags might not offer enough flexibility, so you can try the different style already available with a default Dotlrn installation (deco, nada, sloan or simple themes).
If this is not enough for you, then you can try to modify yourself these themes : in this case, simply edit the theme files located in /packages/nex-portal/www/themes. This will require a fully understanding of what the variable name and the $<$slave$>$ tag are doing