gnus-cite-attribution-face

gnus-cite-attribution-face is a variable defined in `gnus-cite.el'.
Its value is

gnus-cite-attribution

Documentation:
Face used for attribution lines.
It is merged with the face for the cited text belonging to the attribution.

You can customize this variable.

This variable was introduced, or its default value was changed, in version 22.1 of Emacs.