Our minds are programmed to respond to colour. According to studies, colour effects more than our mood - it has the ability to change our buying habits. Colour can invoke as much as an 80% change in motivation when it comes to online shopping, advertising and marketing campaigns. Perceptions of colour can be subjective, some colours have universal meaning. Here are some examples of how different colours are perceived and logos that were designed to aggressively or subtly reach their market.