I have tried but have had no luck. In fact the look and feel is even a bit sloppy. I would really like some skins and more custom areas for editing on the user side and I would like to be able to customize the admin side within the header areas we well for Logo etc. No bueno for us.
Can be done, pain the the **** and takes too much effort to implement.
Also has no refresh to the system so would have to set up an automatic sync based on time lapsed on the page and as the front-end is being changed from Web Objects to Spring and HTML5, there is very little point putting in the effort of adding this as it's being completely overhauled.
Additionally if this wasn't the case, every update that is released and you want to upgrade to, you'll need to re-do your changes you have made as these are overwritten with the updates. In this case as it's being completely reworked it'll become obsolete when it's had everything changed.