The document discusses colour psychology and its effects in the workplace. It provides examples of how different colours like yellow, green, and blue can impact employee moods, morale and productivity. Yellow can energize but too much can fatigue. Green creates calm and is ideal for creative workplaces. Blue has a calming influence and is suitable for creative or medical fields. Examples are given of companies like McDonald's, Groupon, and Facebook that use these colours in their branding and interiors.