Hi Radam,
I think its good. Although I think it would make it better if we can just write the CSS file into the file system. I am not sure if its wise to stuff that into the parameters. Although parameters is cached I still think writing a css file is more efficient.
Novice users can use your UI to create/edit the css file. While more expert users can modify directly the file. Then on the master templates just link the css file like ordinary html stuff.
We also did similar to what you did in CCM. We have site object and CSS of this site was stored in db. Then we have a style.jsp that pulled those out in to the db. I am not that too happy about it since its not flexible. I think the UI to create/edit a CSS file will be far better and flexible. Although more work must be done on the later.
