The crossword solution for the term 'Stain with indelible color' is 'TATTOO'. Tattooing is a form of body modification where ink is inserted into the skin to create a permanent design. It has been practiced for centuries in many cultures around the world, and is now a popular form of self-expression. Tattoos are often used to commemorate special occasions or to express personal beliefs. They can also be used to cover up scars or other marks on the body.