"A seller does not need to buy the blue shower curtain with the blue matching rug, blue towels and the toothbrush and soap holder set. (It's) too matchy, matchy."
Bartelme also warns against spending money staging rooms outside the "zones of influence." Secondary bedrooms and other spaces should be clean, but don't need to be staged. Her only exceptions are for very small bedrooms or other unusual spaces. Add a bed or desk to "allow buyers to see what they could do with the space."
The key to appropriate staging is allowing buyers to picture themselves in a home rather than impressing them with your style and taste. Keep staging simple for maximum effect.