Light coloured curtains are perfect for rooms that get a lot of direct sunlight as they're less prone to fading from the sun and they will also help keep a room feel light and airy. Light curtains will also help bounce the sun's rays away to keep your room cool in the summer. Dark curtains can be a great choice for a bedroom, especially with a blackout lining, to keep your bedroom cosy and conducive to a good night's sleep. Ultimately, whether to go light or dark is a personal preference and you might find you want to switch your curtains out half way through the year for the best of both worlds.