I have mentioned this in a few other posts and decided to start its own topic. Katzkin Leather makes leather interiors for many different vehicles including the 2005 Mustang. They offer over 70 colors as well as door inserts. They offer them for both seat with and without the side airbags. As soon as I get some more information from them, I will pass it along.

P.S. Here is their color chart.

 

holderca1,

Do you know what the cost would be to do your own color and match all of the pieces from the red interior? Can't get to the site, Big Brother is blocking it here at work! c:

 

I don't have any exact number(they don't have it up on their website yet), I would estimate around $700-$800. Installation and labor will probably cost $200-$300, so you are looking at about $1,000 all said and done.

Just did a calculation of the stock leather and cost:

Leather seats = $695
Interior Color Accent Package = $175
Total = $870

So the cost shouldn't be too much more than what the stock leather cost you.