Hi John,
Which 3008/5008 trim did you look at? Most dealers have the GT/GT Premium in the showroom, this has the black headlining as well as all of the bells and whistles. When combined with the rear privacy glass it can be a bit dark in the back, but I test drove an Allure Premium which had a light headlining and seemed to do quite a good job of bouncing light around the cabin during the daytime. The Active, Allure and Allure Premium versions of the 3008/5008 all have this light headlining so it might be worth finding one of those to take a look at.
I took delivery of my 3008 on December 23rd 2021 after ordering on September 14th 2021 – the dealership were really good with letting me have the build dates and the car arrived slightly earlier than expected (I was expecting to collect around this time).