I use Preference Child version 0.1.0. It was in the same .zip file, together with Preference Pro, when I downloaded it less than 24 hours a go.
So, I essentially copied “* Add your menu.css changes here” line from Lite child style.css, and than entered color changes below. It would be very useful if Child theme style.css would have lines from Lite version child theme stylle.css.
Let me tell you it wasn’t easy making all those changes in colors to compact menu. Doing it via theme customize option would be a blessing.