I always thought that the use of colours is important from personal preference to the intent of purpose. I find it interesting how colours can respond to different emotions and moods stemming from the perceptions we have when we were younger and now colour are often used as stereotypes.
The main colour used in this infograph is blue which is unusual because it is a colour and a colour that would be predicted to be used is grey as it is neutral. Other colours used are yellow, black and white, the layout is that it is read vertically down with a white rope line acting as a visual cue to guide us through the infographic (almost has the same action as an arrow but subtle as it is part of the background). Text is broken down into chunks for the user to read easier.