Appearance of usernames in chat vs IM

[Julian Hartmann]

Hi all,

using pidgin 2.5.5 on win32, i have noticed a difference in the way
usernames are displayed in instant messages vs. the way they are
displayed in chatrooms:
while they are bold in ims, their font is "normal" in chats. IMHO,
this makes the chats less readable. (Currently selected GTK theme is
"MS-Windows").

I suppose there is a way to change how usernames are displayed using
gtkrc, but i haven't got a faint idea of what item i need to configure
to accomplish this.

Could any of you enlighten me? :)

Thanks and best regards,
Julian