C# WPF - Change background of only one ListViewItem

I am binding the Item Source of the ListView to a ObservableCollection in my ViewModel. So i would like to change开发者_如何学Go the background color of only one ListViewItem (without selecting it) when i click a button, so the other ones are maintaining theier color. I searched and tested different things, but i didnt found a solution.

Is that possible? Thanks for your effort.