Font of titles analysis

When a thriller film is made they must all have different types of font in their film and the font in the film must more importantly match what the film is suggesting.
Here are some examples of fonts in different films.

 In Shutter Island, the opening credits are designed in a bold flashing font to try and generate a type of fear factor to the audience. The font is also in a bloody red colour, meaning the font may be relating to a feature in the film.

However in the opening titles of Se7en, the titles are designed to look very flashy and sketchy. This is because the font and writing in the opening sequence is never still which is also a lot of the time the same case in Shutter Island, this suggests that both films are going to have a twisted storyline and plot.