Nick,
I hadn't heard of Scuffmaster but looking at their website it seems like they have the proper burnt orange colour we are both looking for. The one I looked at was http://www.dynamixdyes.com/colours.php and they sold 15ml bottles on Ebay (i.e. enough to repair a bolster).
Here's a link http://cgi.ebay.co.uk/Car-Leather-Dye-R ... 4cf0b2addc
If I had the colour code that may help but I'll email them and ask.
Cheers,
Colin