Merlin Color Select Depending on your eye condition, the Merlin Color Select can make reading much more comfortable. Merlin Color Select puts you in control with its full screen and color select capabilitiy. Three standard presets are provided: yellow text on blue background, green text on black background, yellow text on black background. Choose between 28 color combinations in total. Along with the pre-programmed color options, Merlin Color Select also comes with four standard viewing modes: full color, photo mode, high contrast positive and negative. Leading eye care specialists have discovered that magnification is just one way to address certain eye conditions. Often, finding the right combination between color and background can offer dramatic improvements in visibility. Key Features Color Select. There are 28 color combinations to choose from. S-video enabled. All Color Select units also come with S-video. This functionality provides a bright, clear color image. Auto Focus. Intelligent focus lock. Magnification range: 4x to 50x (on a 14" monitor). Four viewing modes: full color, black and white, high contrast positive and high-contrast negative. Largest working area of any desktop system: 18.75" w by 20" d. Object Locator. 3-year warranty.