Minnesota Historical Society collections GV5.9 r14. A. Exposure to light can hurt photos. Locate framed pictures in the darkest possible place in your house, or make a copy of the photo and keep the original in dark storage. Metal frames are preferable to wood. Use a 100 percent rag matte board and remove any wooden backing - it can emit harmful chemicals.
Dark storage is also important for children's school portraits.
Some studios do not process them properly, making them more susceptible to color changes. Since they come in multiples, display one and keep one in storage. Most color photos fade over time. If black and white pictures don't seem appropriate or possible, then take color prints or slides. Prints have the advantage of being easier to view, and they don't accumulate dust as much as slides.