WPF ProgressBar questions

Two questions:

1) Although the Value of the ProgressBar is 0, set both in the XAML and also in code, the progress bar shows progress when it should show none. I print out the Value on the screen and it is 0. 

2) How can I change the color from Green? I try this:

progProgressBar.Foreground = System.Windows.Media.Brushes.White;

progProgressBar.Background = System.Windows.Media.Brushes.White;

But now I get a fainter green color.

RON