erc-track-faces-priority-list

erc-track-faces-priority-list is a variable defined in `erc-track.el'.
Its value is shown below.

Documentation:
A list of faces used to highlight active buffer names in the mode line.
If a message contains one of the faces in this list, the buffer name will
be highlighted using that face. The first matching face is used.

You can customize this variable.

Value:

(erc-error-face
 (erc-nick-default-face erc-current-nick-face)
 erc-current-nick-face erc-keyword-face
 (erc-nick-default-face erc-pal-face)
 erc-pal-face erc-nick-msg-face erc-direct-msg-face
 (erc-button erc-default-face)
 (erc-nick-default-face erc-dangerous-host-face)
 erc-dangerous-host-face erc-nick-default-face
 (erc-nick-default-face erc-default-face)
 erc-default-face erc-action-face
 (erc-nick-default-face erc-fool-face)
 erc-fool-face erc-notice-face erc-input-face erc-prompt-face)