In addition to the standard finish on the steel fittings three options are available at a small extra charge:
Blued fittings (+35 EUR). An example of the blued finish can be seen on the pictures of the Next Generation Machiavelli. Please note that the blued finish will wear off in time.
Antiqued fittings (+35 EUR). An example of the antiqued finish can be seen on the extra pictures of the Next Generation Earl. Please note that the actual finish may wary from this picture.
Browned fittings (+35 EUR). Please note that the browned finish will wear off a little over time.
Here are examples of the different fitting finishes.
From left to right: Blued (NG Machiavelli), Browned (NG Ritter) and Antiqued (NG Bayeux):

