thats exactly what we have that skin for.the problem with the current engine is that you definately have to start by copying an existing skin (99.9% B2)... then things get complex (what is "your" design, what is B2 idea?)
you must not expect any probelms (copyright). as long as you do not try to sell it, you can do everything with it
currently its been worked on a system to store changes in svn code that will effect skins and may require updates of the skin. (similar to a changelog)if at least there was a comprehensive list of what changes in B2 between SVN...
no timeframe for that at this moment.
Austria