Colours for quotation
It would be nice if the quoted texts in messages would appear in a different colour, like every decent email client does.
Maybe not coloured as this one, but only slightly greyed.
There is a C example demonstrating coloration attributes within a GtkTextView widget here :
http://www.gtkforums.com/viewtopic.php?t=1189
I haven't looked to see if our gtk-go supports this feature of GtkTextView.
Also, I suspect the "right way" to do this is using GtkSourceView because editing a GtkTextView widget might disrupt the coloration, and GtkSourceView is designed to do syntax highlighting in the first place.
https://developer.gnome.org/gtksourceview/stable/GtkSourceView.html
Just fyi, GTK needs pkg-config under MacPorts, if you build that example, so :
gcc -o gtk_textview_color_test gtk_textview_color_test.c pkg-config --cflags --libs gtk+-2.0