Convert all inactive selection border into references

Author: bclothier

Rubberduck.Core/UI/CodeExplorer/CodeExplorerControl.xaml

@@ -220,7 +220,7 @@
                             <Condition Property="IsSelected" Value="True"/>
                             <Condition Property="IsSelectionActive" Value="False"/>
                         </MultiTrigger.Conditions>
-                        <Setter Property="BorderBrush" Value="LightGray"/>
+                        <Setter Property="BorderBrush" Value="{StaticResource HighlightInactiveBorderBrush}"/>
                     </MultiTrigger>
                 </Style.Triggers>
                 <Style.Resources>

Rubberduck.Core/UI/CodeMetrics/CodeMetricsControl.xaml

@@ -62,7 +62,7 @@
                                         <Condition Property="IsSelected" Value="True"/>
                                         <Condition Property="IsSelectionActive" Value="False"/>
                                     </MultiTrigger.Conditions>
-                                    <Setter Property="BorderBrush" Value="LightGray"/>
+                                    <Setter Property="BorderBrush" Value="{StaticResource HighlightInactiveBorderBrush}"/>
                                 </MultiTrigger>
                             </Style.Triggers>
                             <Style.Resources>

Rubberduck.Core/UI/RegexAssistant/RegexAssistant.xaml

@@ -26,7 +26,7 @@
                             <Condition Property="IsSelected" Value="True"/>
                             <Condition Property="IsSelectionActive" Value="False"/>
                         </MultiTrigger.Conditions>
-                        <Setter Property="BorderBrush" Value="LightGray"/>
+                        <Setter Property="BorderBrush" Value="{StaticResource HighlightInactiveBorderBrush}"/>
                     </MultiTrigger>
                 </Style.Triggers>
                 <Style.Resources>

Rubberduck.Core/UI/Styles/DefaultStyle.xaml

@@ -30,6 +30,7 @@
     <Color x:Key="GreenButtonMouseOverColor">#FF61D156</Color>
     <Color x:Key="HighlightBorderColor">#80DADADA</Color>
     <Color x:Key="HighlightBackgroundColor">#210080FF</Color>
+    <Color x:Key="HighlightInactiveBorderColor">#FFD3D3D3</Color>
     <Color x:Key="GlyphPanelHighlightBorderColor">#90006CD9</Color>
     <Color x:Key="GlyphPanelHighlightBackgroundColor">#90006CD9</Color>
     <Color x:Key="ExpanderBorderColor">#FFA9A9A9</Color>
@@ -55,6 +56,7 @@
     <SolidColorBrush x:Key="GreenButtonMouseOverBrush" Color="{StaticResource GreenButtonMouseOverColor}"/>
     <SolidColorBrush x:Key="HighlightBorderBrush" Color="{StaticResource HighlightBorderColor}"/>
     <SolidColorBrush x:Key="HighlightBackgroundBrush" Color="{StaticResource HighlightBackgroundColor}"/>
+    <SolidColorBrush x:Key="HighlightInactiveBorderBrush" Color="{StaticResource HighlightInactiveBorderColor}"/>
     <SolidColorBrush x:Key="GlyphPanelHighlightBorderBrush" Color="{StaticResource HighlightBorderColor}"/>
     <SolidColorBrush x:Key="GlyphPanelHighlightBackgroundBrush" Color="{StaticResource HighlightBackgroundColor}"/>
     <SolidColorBrush x:Key="ExpanderBackgroundBrush" Color="{StaticResource ExpanderBackgroundColor}"/>
@@ -126,7 +128,7 @@
                     <Condition Property="IsSelected" Value="True" />
                     <Condition Property="Selector.IsSelectionActive" Value="False" />
                 </MultiTrigger.Conditions>
-                <Setter Property="BorderBrush" Value="LightGray"/>
+                <Setter Property="BorderBrush" Value="{StaticResource HighlightInactiveBorderBrush}"/>
                 <Setter Property="Background" Value="{DynamicResource {x:Static SystemColors.InactiveSelectionHighlightBrushKey}}" />
             </MultiTrigger>
         </Style.Triggers>