Office 2013 Preview isn’t just sluggish and single-colored to the point of being depressing:
I’m pretty sure this might be the most features removed from a release of Office. Have a look here – it’s downright depressing…
Changes in Office 2013 Preview
Notice the large number of features removed with no compelling reason. At least one feature (broadcasting powerpoint presentations) was removed so they could try to force you to pay for Lync.
Why Microsoft, why?