set_source_rgb (cr, bg_colour);
cairo_rectangle (cr, xoff + x, yoff, _longest_bundle_name + name_pad() * 2, grid_spacing() * n);
cairo_fill_preserve (cr);
set_source_rgb (cr, bg_colour);
cairo_rectangle (cr, xoff + x, yoff, _longest_bundle_name + name_pad() * 2, grid_spacing() * n);
cairo_fill_preserve (cr);