It sounds as though the current version isn't even legal, as the author doesn't have a commercial EXT license, and the source has not been opened.
I would recommend that the community tackle the project without using this unreliable, and likely illegal system.
No offense meant iv_ekker, but this has been going on too long. You had a good idea, and a nice implementation but I think this functionality is too important to a lot of users to have it under these conditions.
I wouldn't get too hung up on the fine print over this, nor would I like to see Sergei copping flak over what looks like a legal oversight. I expect he will tidy up the licence issue if he decides to commercialise it.
I think Sergei deserves kudos for developing a "ThemeRoller" for Ext, and some allowances should be made for legal/commercial innocence.
The key question is a commercial rather than legal one and that is whether any user/customer of this, or for that matter any third party service have comfort that support will continue.
Anyone know if Ext are planning to do an official "ThemeRoller" ?