The dreaded painterly effect http://www.bbc.co.uk/news/world-europe-19349921 (http://www.bbc.co.uk/news/world-europe-19349921)
aka when restoring takes a wrong turn
That is so sad, Marga. Especially as it's not digital and someone with incredible physical restoration skills will have to remove the new paint to get back to the original - if it's even possible. Makes me so glad we have our computers!