Waterloo Nassau Artlillery question...

[Baron von Wreckedoften]

A lot of people (including Perry Miniatures) have painted the regiment with red facings, thanks to a mistake in an Osprey book, where the text says orange, but the matching picture shows red! 

There is a lot of confusion over how "red" Dutch "orange" actually was, dating all the way back to Renaissance times, so it may not be a "mistake" as such, merely a liberal interpretation.  Achieving a proper orange was hard work in the 1500s, and making it last was equally difficult, especially at sea (which was the main use of "national" flags at that time) so the Dutch moved to red instead.  There were regiments with orange facings (thinking specifically of the British 35th Foot here), but surviving swatches of cloth suggest these often ended up a dull tawny, or even light brown hue.