Accessibility is pretty important to us, and we want to make Windows Media Center easy to use for visually impaired folks. The default experience in Windows Media Center makes your digital media much more accessible to start with compared to Windows Media Player, iTunes or Zune -- because everything is bigger (your album art, the text, selectable items, etc.). There are some high contrast accessibility features you can turn on which make it even easier to read and navigate Windows Media Center if you are vision impaired. Get to them via Tasks > Settings > General > Visual and Sound Effects > Color Scheme. Here is what they look like.
High Contrast - White
High Contrast Black