Nima,
You can add a new theme modifying defaults.sql under new-portal.
But we had to work also on the dotlrn-master and site-master templates. We can commit this to CVS or give some instruction about changing the look and feel. The question is how to integrate it with the official release, on which branch: 5.1, 5.2 or 5.3? Btw, I think we can provide one or two additional themes: having a better usage of CSS since .LRN 2.1 makes this easier.
As for SCORM RTE, we can also commit it to CVS. This is an implementation of the RTE API Adapter, derived from the Java applet sample published by ADL. But I'd rather discuss it in another thread. I've added it to this demo to allow more testing: everyone can add a SCORM package.