Based on the actual photos and comparison to the design concept drawings it "appears" the large Winged D logos on the south and north sides are going to be back lit ... secondly the actual D "appears" to be slightly smaller than the concept drawings .... I use the horizontal non-red brick work as a base line to the bottom of the logo as the measure to gauge the size.
The Winged D on the east facing upper level of the 400 sections don't appear to be back lit but are probably going to have external lighting played on them instead of back lit.
All in all I thank Figgie for his attention to detail and his regular up-dates on the arena.
All Hail Sir Figgie!