Pin on PinterestShare on FacebookEasy and foolproof designer decorating tricks that will add light to dark rooms in a house through decorative details. One that has popped up more than a few times is this question… How can I brighten a dark room? Another way to brighten dark rooms is to use light-colored fabrics when choosing curtains or blinds. I hope this post answers the question, How to brighten a dark room? A Brighter Room Can Change EverythingEvery dark room is a little different.