Traditionally associated with fire and flames, the colour red is seen as a hot shade. Decorating using the hue, or even introducing red through your soft furnishings and accessories such as red vertical blinds, can help promote a feeling of warmth. Red is also known as an energising colour and if conserving energy is one of your concerns, you may want to opt for energy-saving vertical blinds to adorn your windows and trap in heat at the same time.