Just had a very quick look at 2.1 Beta 1.  Whilst the app seems nice and snappy, there are some places where some text is difficult to read.  I refer to some of the headings on the home page, and the grid titles on the Issues grid, where you are using either black or dark blue text on a dark blue background.  I think there needs to be a geater contrast between the text and background colours in these places.

Kevin