<p>In <a href="https://github.com/geany/geany/pull/1181#discussion_r75579651">src/vte.c</a>:</p>
<pre style='color:#555'>> +    {
> +          GError *error = NULL;
> +
> +          background_image_pixbuf = gdk_pixbuf_new_from_file(path, &error);
> +          if (! background_image_pixbuf)
> +          {
> +                  g_warning("Failed to load VTE background image: %s", error->message);
> +                  g_error_free(error);
> +          }
> +          /* alter the background color to add alpha to it */
> +          else if (vf->vte_terminal_set_color_background_rgba)
> +          {
> +                  GdkRGBA bg;
> +
> +                  /* default VTE "saturation" value is 0.4: 1.0 - 0.4 = 0.6 */
> +                  rgba_from_color(&bg, &vc->colour_back, 0.6);
</pre>
<p>apparently this is wrong, and VTE doesn't use the background color to perform the blend, but black instead.</p>

<p>IMO the implementation here is better as it's more flexible at very little cost, but if we want to get exact same behavior we should use <code>GdkRGBA bg = { 0, 0, 0, 0.6 }</code>.</p>

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