It's the GtkTreeView widget. A "ghosted" display is rendered when the GtkCellRendererText/Pixbuf/Progress elements making up the display of a torrent cell have the "sensitive" property false. This occurs with torrents that are not in an error state and are paused.
That code is in transmission's gtk/torrent-cell-renderer.c, in render_compact() and render_full().
It's the GtkTreeView widget. A "ghosted" display is rendered when the GtkCellRenderer Text/Pixbuf/ Progress elements making up the display of a torrent cell have the "sensitive" property false. This occurs with torrents that are not in an error state and are paused.
That code is in transmission's gtk/torrent- cell-renderer. c, in render_compact() and render_full().