"Plus they must all have heard that song, popularized by Hendrix and Stevie Ray, but originally sung by Darius the Great -- "there's a red floor over yonder, that's where my babies stay..."
The archaeologists didn't get it because they were still listening to Jim Lowe's 1956 #1 hit "Green Door,"'What's that secret you're keeping?'
:'D
Besides, red floors are so 500 BC.
Maybe they were too busy trying to find what was 'behind the green door'?