Rust may be the physical flaking of iron oxide caused by oxidation and moisture, but its mixture of brownish-reddish-orange and copper colours is simply beautiful.
Forget thinking that ‘rusty’ is a bad thing – rust is made up of multidimensional colours, just like redheads’ hair.
Either that, or ‘Rusty’ is also a nickname given to people called Russell. Winning points go to anyone called Russell who also has red hair!
See also: ‘carrot top’ and ‘bluey’