Yep, all you need to do is get something large enough and close enough in the background and placed in the right place to fill the reflection. The color/tone of what you put there will become part of your base or platform color/texture. Mirror will reflect it almost exactly (depending on if you keep it in focus or blurred). If you have access to a larger color printer (11x17 should be big enough for most of our pens) you can print out gradation colors and use them in the background for great effects. For other effects, you can take a piece of glass and spray paint the under side with just about any color you want for different effects, Black works fantastic, and use it just like you would mirror...