MahApps/MahApps.Metro — pull request #687 by xxMUROxx (2013-10-07 19:43:43+00:00)
Title: Tooltip: Background Color is now the right color for the theme.

I suggest to Change the ToolTip style as follows:

Dark Theme: Background=black, Text=white, border-color=white
Light Theme: Background=white, Text=black, border-color=black

This PR contains the modifications for this Suggestion.