Colton:  So, Mulder, whatta ya think?
              This look like the work of little
               green man?

Mulder: Grey.

Colton: What?

Mulder: Grey. You said "green men." A
              Reticulian's skin tone is grey.
              They're notorious for their
              extraction of terrestrial human
              livers, due to iron depletion in
              the Reticulum galaxy.

Colton: You can't be serious?

Mulder: Do you know how much liver
              and onions go for on Reticulum?