- shadow window
- light shadow
- shadow wall
- background overlay
- shadow
- shade
- reflection
- background shadow
- grey
- transparent
- background grey
- gray
- background gray
- overlay
- empty frame
- room window
- blank frame
- light reflection
- window
- light room
- wall
- background wall
- background effect
- effect
- abstract light
- frame light
- light overlay
- sunlight
- background light
- effect light
- gray wall
- grey wall
- empty room
- background frame
- abstract grey