Analysis of Trailers.

Insidious 2.

The trailer begins with the characters  happily enjoying each others company to upbeat music. However the first thing we notice is that the inside of the house is dark and all windows are opaque, in stark contrast to the well lit and visible exterior. This suggests to the audience that the house is home, not just to 'Grandma', but also to a host of secrets and unexpected occurrences. Upon entering the house we see more evidence of the tinted secrecy by the fact 'Grandma' is wearing black. When text such as 'THEIR CHILD INHERITED A GIFT' is seen, it appears to on a plain black background, suggesting that the answers/clues will only come from the darkness. 

Monsters University.

Pacific Rim.