I'd like to have more options configuring the break display behavior, mainly because I quite like the behavior of "Eyes Relax" <http://themech.net/eyesrelax/>. That software provides the following options:

* Break dialog
* Blank screen (incl. color)
* Image (incl. path to image)
* Slideshow (incl. path to image directory)

The latter options are very useful, I personally prefer just to let the display turn grey. This way, I am not distracted by anything during the breaks, it's just a break, screen is empty, no hints, no Windows background, nothing!

Actually "Eyes Relax" still displays a progress/countdown bar + cancel button during the empty screen. So I'd prefer to have this configurable too:

* Show progress/countdown bar during break (yes/no)
* Show cancel/skip/postpone button during break (yes/no)

In addition to the 4 modes above, there could be a "Text message" mode, where some user definable text messages appear on the display, such as:

"Belly relaxed, abdominal breathing. Head back, shoulders easy. Look outside, stretch, yawn."
or
"Rotate shoulders, move head. Stand or sit. Backrest fixed or flexible. Get up and walk a bit."