Black Haired Girl With Big Breasts Reveals Her Jean Denim Shirt And Thong Panties On The Sofa Chair At The Window

Denim was traditionally colored blue with indigo dye to make blue jeans, although "jean" formerly denoted a different, lighter, cotton fabric. The contemporary use of the word "jean" comes from the French word for Genoa, Italy (Gênes), where the first denim trousers were made.
Dry or raw denim
Dry or raw denim (contrasted with "washed denim") is denim that is not washed after having been dyed during production.