ListBox SystemColor for Inactive Item?

Question

I have changed the following SystemColors already:

<!-- Background of selected item when focussed -->
<SolidColorBrush x:Key="{x:Static SystemColors.HighlightBrushKey}"
                 Color="Transparent" />
<!-- Background of selected item when not focussed -->
<SolidColorBrush x:Key="{x:Static SystemColors.ControlBrushKey}" 
                 Color="Transparent" />

I'm not sure what to call it, but which SystemColor is responsible for what I'm calling the: "InactiveSelectedItem"? It changes to this color every time I lose focus on the SelectedItem.

Would be nice if someone could help me. I used blend already to check but I can not find. The color is #F0F0F0.

Example:

Answer 1

You're looking for SystemColors.InactiveSelectionHighlightBrushKey (.NET 4.5)

<SolidColorBrush x:Key="{x:Static SystemColors.InactiveSelectionHighlightBrushKey}" Color="Transparent"/>