I've been getting into TF2 trading a lot more now, and I heard of something called a paintable Cow Mangler 5000.
Apparently, applying paint to the Cow Mangler would give it a unique color of fire. Unfortuantely, I can't find any evidence online to support the existence of a painted Cow Mangler, let alone on the official TF2 Wiki.
Does such a thing exist? Is there evidence to support this?