Pastel or softer colors look better in flat paint. Chocolate brown or very dark colors, I think look better with a little shine to them. The satin or semi finish will keep them from looking dreary by reflecting light around the room. Painting is the most cost effective way to give your room lots of impact. You may want to select a striking wallpaper pattern in keeping with the color scheme of the rest of the home. Stripes are great for adding volume and height.
When it comes to the amount of lighting, foyer always needs more amount of light as it is the front entrance. Also, see to that you do not provide too much of bright light. That may result in producing glare, right at the entrance, and this may annoy the guests when they step in. But if you have anything really attractive in your foyer or if you have a staircase there, then it is mandatory to use a bright foyer chandelier or spot lights. If you have beautiful pictures or paintings displayed on your walls, you can showcase them with gallery styled accent lights or track lights in your foyers. Accent lighting is always an added advantage for foyer decoration.