I've read this from several sources, but having a hard time verifying if it is true. Also, I was wondering if the interior walls of castles were typically whitewashed and/or painted, or more likely to be exposed stone. Any help is greatly appreciated, thank you.
I can't speak more generally to all castles, unfortunately, but I know in the specific case of Caenarfon Castle in Wales the walls wouldn't have been plastered or whitewashed. Caenarfon was built by Edward I has part of his massive castle building project post-conquest and the walls have lines of different coloured stone that run across the walls. This was done to mimic the famous walls of Constantinople and was quite difficult to do since the different stone had to be shipped to the castle building site. There wouldn't exactly be much point in doing that if you were going to cover the walls. You can see the lines in a picture of the castle: http://en.wikipedia.org/wiki/File:Caernarfon_Castle_1994.jpg
Source: Marc Morris A Great and Terrible King
