The opening titles of "Rear Window" are based in two colours, black and white. Both of these colours have a large impact on the audience as they contrast with one another. The bland and dull colours create a mood, which a film using other colours cannot achieve as well for the simple reason that colour can tend to overwhelm the viewer. These colours linked with the music played in the background adapts very well with one another and from the beginning of the film you can already acknowledge what sort of film it is going to be. It has a lasting effect on the viewers as that linking with the colours helps set the mood even further.
Another Alfred Hitchcock movie, "Psycho" also uses the same effect on the audience to help them to get into the mood of what is to come. The fast paced orchestral music makes the viewer already controlled and sets the mood. The audience become aware of how this film is going to be from the title sequence and the contrast of colours and music. Its just generally wild and frantic. The text is coming down randomly and moving around constantly which shows instability. This could relate to Norman Bates split personality later on. The music is also unpredictable with a heavy dramatic effect of the string instruments being played at a very fast pace. It is dark, discordant and full of suspense.