And the cobalt blue truss warmers, which is on the blue side of purple on the FOX set
Stagehand here, working in his 20th season
Truss is used to hang lights from, and also often used to construct outdoor concert/festival rooftops to keep the rain and weather off the talent the best that a half open tent can–which isn't much. Sometimes the client wants to light them up because it makes them look really cool
At your service, anon