It's not as absurd as it may seem. Eminem discussed the topic at one point, although I don't think any of them would fit the bill as a replacement for "redhead": https://www.youtube.com/watch?v=lPcR5RVXHMg
Oh danger, orange, her hair may be, by the manger, quite, orange she sees, the fire burns bright, the ranger, he schemes, in death she finds evil Sir Granger's deeds.