I believe that this is your answer. If I recall, the background is white during the day and will switch to MyColor at night or when there is low light. Try covering the sensor on the dash with a piece of cloth during the day and see if the dash changes color. It may take a minute.
I was going to make the cloth suggestion, but that leaves room for error if not done just right. Driving at night is a 100% test.
(11.)2012 GT500 silver with red stripe, SVT performance package, and Recaro seats.
2018 Honda Civic Type R
Past Mustangs in order and color of text.
(1.)2000, (2.)2004, (3.)2006GT/Auto traded for (4.)2006GT/Manual, (5.)1996, (6.)2011GT, (7.)2003GT, (8.)2006GT, (9)2013 Boss 302, and (10.) 2002GT
(I have owned a few non Mustang cars over the years as well, but always try to have a Mustang with it or come quickly back to a Mustang!)