In Noh and kyōgen, the word iro, or “colour,” simply refers to the colour red. For example costumes or og for female roles that include the colour red are referred to as iroiri and worn and used by younger female roles. Costumes and objects that do not include red are known as ironashi, or “colourless” and are used for middle aged or older characters. To add an air of youthful beauty to older female characters, an aged and faded red colour is sometimes used. Kokata often wear iroiri costumes.