Night Vision Effect

In our film trailer we have planned to incorporate a scene where the female victim will be in a dark room panicking/in distress. We would like to use the night vision effect on this specific scene to distort the footage to create suspense and confusion for the audience. 

 Having researched previous kidnapping based narrative film trailers, we would like to incorporate a night vision effect scene in ours. We like the effect as it creates suspense and also helps create and eerie atmosphere. I came across a tutorial on YouTube on how  to create this type of effect on iMovie, however we would like to experiment with the colours instead of 'going green' perhaps try blue like the one shown in the print screen in the left.
Having a blue effect connotes that the victim is isolated whereas having a red effect on the kidnapper could connote that he is the 'baddie' as well as suggesting danger. We will experiment with both colours to see which is best.