Lurid – Adjective
Definition : very vivid in color, especially so as to create an unpleasantly harsh or unnatural effect.
Source : http://www.oxforddictionaries.com/us/definition/american_english/lurid
Found in: The Yellow Wallpaper by Charlotte Perkins Gilman
Quote: “It is a dull yet lurid orange in some places, a sickly sulphur tint in others.” (2nd page, last paragraph).
With this quote we can get a sense of how the narrator described the color of the wallpaper in her room that is driving her insane. She describes it as being dull and the orange in some places creates an unnatural and unpleasant effect.