he who paints with rust

he who paints with rust
knows he must use yellows sparingly
against red;

saffron, mustard and gold dust--
earthy yellows blend nicely with
orange and russet.

as you well know,
opposites attract

and for that

use cerulean or indigo,
or else Antwerp blue
contrasted with copper instead,

plus white
to add light

and to provide
depth of field and flair
as required.