Editing Stained glass (section)

==="Sanguine" or "Cousin's rose"===
"Sanguine", "carnation", "Rouge [[Jean Cousin the Elder|Jean Cousin]]" or "Cousin's rose", after its supposed inventor,<ref>In fact  [[Jean Cousin the Elder]] was only born in 1500, at the same time as the tehnique; claims that he was the first French painter in oils might be more valid.</ref> is an iron-based fired paint producing red colours, mainly used to highlight small areas, often on flesh. It was introduced around 1500.<ref>[https://boppardconservationproject.wordpress.com/2013/07/21/facts-about-glass-sanguine-and-carnation/ "Facts about Glass: Sanguine and Carnation"], Boppard Conservation Project – Glasgow Museums; Historic England, 288</ref> Copper stain, similar to silver stain but using copper compounds, also produced reds, and was mainly used in the 18th and 19th centuries.<ref name="auto">Historic England, 290</ref>