Prima Art Extravagance ~ Rust Paste Set (5 ratings) £12.99 Quantity: at £12.99 each Add To Basket Set of 3 in Gold Rust, Red Rust and Brown Rust. 1.7 fl oz (50ml) each pot Rust paste is an opaque, thick paste with a matte rust like finish. Perfect for creating rusty texture and adding dimension. For best results, apply three colours of the paste with a sponge, palette knife, texture tool or brush. Water based.