I've only been there once, to see City of Angels, which was pre-renovation/restoration. To say it was plain would be an understatement. After the Guild left, it became a radio studio. It was later bought y the American National Theatre Company and became known as the "ANTA." ANTA did a renovation which one book describes as leaving the theatre as a "severely functional space devoid of decoration." It did have at least two hits; The Owl and the Pussycat and A Man for All Seasons. Jujamcyn eventually bought it, named it the "Virginia" after a member of Jujamcyn's Board. Jujamcyn did the current renovations in the early 2000's, then later renamed it after August Wilson.
Obviously, City of Angels was a while ago, but I do remember being underwhelmed with the venue (loved the show). First, no one told us we had to go upstairs to get to orchestra seats- leaving a group of patrons (including myself) standing in the lobby facing a curtained area we assumed was the orchestra, figuring there as a delay in seating for some reason. To my collection, the interior was off/white cream. No visible detail work (scrolls, cherubs, etc). The arches on the sides of the orchestra were still visible. I tend to remember a visible metal ladder sticking out of the ceiling near one of them. The curtain (I assume not installed specifically for the show) was dark blue with two white horizontal stripes across the bottom (I have no idea why I remember that details so specifically). It did not appear to be made of the type of materials "house curtains" tend to be. My thought was the same as an earlier poster- is this a Broadway Theatre or a High School Auditorium.
The picture of the current interior on Jujamcyn's website is impressive: https://www.jujamcyn.com/theatres/august-wilson/