A small cheat today, as time is in short supply.
Iodine is a chemical element with symbol I and atomic number 53. The name is from Greek ??????? ioeid?s, meaning violet or purple, due to the colour of elemental iodine vapour
I couldn’t find a bottle of iodine but I did have some fibre lying around in my studio and it was almost the right shade…
So, it’s not much of an image today. You could shoot me…