The retainer agreement should accurately describe the fee arrangement. That having been said there is nothing improper about taking art or any other marital asset as a fee: that's what cash would be.
UPDATE: You can not "contact the judge." If you don't understand appropriate procedure you should consult a local attorney.
And, as noted above, marital assets are almost invariably used to pay legal fees. There's nothing inappropriate about it.
Answered on Aug 25th, 2013 at 4:36 PM