Slippery slope you continue. Why do you want to remove the "little blue border around the list". I guess its focus is visual and it serves a purpose in the user interface. If you are not going to completely customize the presentation style of the list, I would suggest leaving it alone.
One way to turn it off is to define a style based on the type for the list in application resources (probably in App.xaml)
<Style TargetType="{x:Type ListView}"> <Setter Property="FocusVisualStyle" Value="{x:Null}" /> </Style>
NVM
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