Annabelle Duke have just launched this amazing Antique Glaze, it is is lightly tinted in two colours a ricj brown and a black. and creates a matt finish.
It is really easy to use and stays workable for a long time so you can get just the look you are after.
Best used over lighter colours and use sparingly. It always a good idea to do a test and a bit of spare wood first to make sure you like the result.