The diff viewer in ReviewBoard normally highlights the differences with pink for deleted lines, green for new lines and yellow for modified lines.

This style adjusts the colors in a ReviewBoard diff viewer
It makes the green and pink a little darker, but most noticably , modified lines are blue instead of a pale yellow.

This is written as a global style change so that it can be
used with any reviewboard server.

See http://www.review-board.org for information on reviewboard.