The openings of "A Clockwork Orange" and "Full Metal Jacket"

Both the opening of Kubrick's "A Clockwork Orange" and "Full Metal Jacket" aim to have an effect on the spectator through the devices used. A Clockwork Orange begins with a blood red screen, connoting danger and anger before cutting to a blue screen that then connotes a sense of calm. As the scene progresses we see a close up of Alex's face as he's staring straight through the camera to the spectator, forcing us to align with him as it's clear he's the main focus and protagonist of the film. The red and blue screens are a juxtaposition and symbolise Alex's personality. 

However, the opening of "Full Metal Jacket" begins by showing soon to be soldiers getting their heads shaved revealing a loss of identity. We, as spectators, are unable to align with any character in this scene as they are all made to look the same and the fact that whilst in "A Clockwork Orange" Alex's character is staring at us, the characters of "Full Metal Jacket" are not, meaning they aren't engaged with us. Alex's character narration in "A Clockwork Orange" is in full detail as opposed to that during "Full Metal Jacket" and makes it easier to become involved within the story and as Alex addresses the audience, we feel closer to him.