Iris flowers come in such a wide variety of colors, and it's assumed that that's how it gained its name. Iris is the Greek word for rainbow and there also happens to be a Greek goddess named Iris.
The iris is such a beautiful flower and one so significant to a number of cities and countries. The fluer-de-lis is a stylized iris, and appears in flags and coat of arms from New Orleans, to Quebec, France, Brussels and Florence.
Choose any color of the rainbow for your iris tattoo, or go the blackwork or black and grey route. Your tattoo artist will surely appreciate the change from the average rose tattoo request!