Painting a room can be a great way to change the decor of a room and make a big impact without spending too much. Not only can the wrong paint color ruin the look of a room, but it can also affect your mood, your health, and the mental health of your loved ones. A room with the wrong paint color can actually cause a room to feel stuffy and stale, and might even lead to people feeling unwell–not what you want for your living room.