When I filmed my footage, I found that lots of the colours and lights were 'too harsh' and they did not look natural within the film. Also The theme of the video is quite dark and sad, and bright colours did not fit in with the idea of the video.
I found out how to 'Colour correct' through online tutorials on the website 'Video Copilot' I found out that to make the effect to work, you add a grey filter over the footage, you select this by going on video effects. You have to alter the opacity of this filter, and it gives the appearance of toning down the light and colour. I then altered the 'RGB curves' and moved the Red, Greens and Blues until the shots looked more natural.