The foyer is the room that greets you as soon as you step through the front door. This is the first space and sometimes the only space guests see of your home, yet often foyers or entryways are neglected. This strikes me as odd. Somehow, I always think of the foyer as one of the most important rooms in the home. The foyer is usually where first impressions are made.
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.