When you get into your shower do you feel like you are stepping into a tomb? Do you feel that because your bathroom is already small there is nothing you can do about it? Rarely is this true; most walls are still 8 feet tall and most bathrooms are still 5 feet wide even at their smallest width. If the entire area is opened up to max capacity you can always get a 5 X 3 shower quite large by most standards. I would encourage you to go with a very light tile for your shower and use that same tile for your bathroom floor. This will give it a continuous look which always looks bigger. Don’t forget to paint the walls 1 to 2 shades darker than your tile and you have a home-run.