Preference for default appearance
It would be nice to change the default appearance of all entries; not on a per entry or per-status basis. In this way, everybody can easily set Task Coach to his/her preferred readability.
For example, a dark background with light text could be a default. Without this option, there's no way to make categories have a dark background and light text without that overriding other appearance settings when a task has a category applied to it.
There is now the possibility to set a default appearance for each type of task state in the preferences.
However, it could still make sense to have an overall default that would set all the states if they haven’t otherwise been customized. This would also allow something not currently possible: a default for the text in the category viewer.
Note, however, that there is a request already for global font-size change (though global change is not identical to the idea of a default)
http://taskcoach.uservoice.com/forums/26465-desktop-version-windows-linux-mac-of-task-coach/suggestions/468682-global-font-size-change