ColorPicker: added 3 properties; AvailableColorsHeader, StandardColorsHeader, and RecentColorsHeader which will allow you to change the text for the respective sections.

ExtendedWPFToolkitSolution/Src/WPFToolkit.Extended/ColorPicker/Implementation/ColorPicker.cs

@@ -33,6 +33,17 @@ namespace Microsoft.Windows.Controls
 
         #endregion //AvailableColors
 
+        #region AvailableColorsHeader
+
+        public static readonly DependencyProperty AvailableColorsHeaderProperty = DependencyProperty.Register("AvailableColorsHeader", typeof(string), typeof(ColorPicker), new UIPropertyMetadata("Available Colors"));
+        public string AvailableColorsHeader
+        {
+            get { return (string)GetValue(AvailableColorsHeaderProperty); }
+            set { SetValue(AvailableColorsHeaderProperty, value); }
+        }
+
+        #endregion //AvailableColorsHeader
+
         #region ButtonStyle
 
         public static readonly DependencyProperty ButtonStyleProperty = DependencyProperty.Register("ButtonStyle", typeof(Style), typeof(ColorPicker));
@@ -77,6 +88,17 @@ namespace Microsoft.Windows.Controls
 
         #endregion //RecentColors
 
+        #region RecentColorsHeader
+
+        public static readonly DependencyProperty RecentColorsHeaderProperty = DependencyProperty.Register("RecentColorsHeader", typeof(string), typeof(ColorPicker), new UIPropertyMetadata("Recent Colors"));
+        public string RecentColorsHeader
+        {
+            get { return (string)GetValue(RecentColorsHeaderProperty); }
+            set { SetValue(RecentColorsHeaderProperty, value); }
+        }
+
+        #endregion //RecentColorsHeader
+
         #region SelectedColor
 
         public static readonly DependencyProperty SelectedColorProperty = DependencyProperty.Register("SelectedColor", typeof(Color), typeof(ColorPicker), new FrameworkPropertyMetadata(Colors.Black, FrameworkPropertyMetadataOptions.BindsTwoWayByDefault, new PropertyChangedCallback(OnSelectedColorPropertyChanged)));
@@ -122,7 +144,7 @@ namespace Microsoft.Windows.Controls
         {
             get { return (bool)GetValue(ShowAdvancedButtonProperty); }
             set { SetValue(ShowAdvancedButtonProperty, value); }
-        }        
+        }
 
         #endregion //ShowAdvancedButton
 
@@ -170,6 +192,17 @@ namespace Microsoft.Windows.Controls
 
         #endregion //StandardColors
 
+        #region StandardColorsHeader
+
+        public static readonly DependencyProperty StandardColorsHeaderProperty = DependencyProperty.Register("StandardColorsHeader", typeof(string), typeof(ColorPicker), new UIPropertyMetadata("Standard Colors"));
+        public string StandardColorsHeader
+        {
+            get { return (string)GetValue(StandardColorsHeaderProperty); }
+            set { SetValue(StandardColorsHeaderProperty, value); }
+        }
+
+        #endregion //StandardColorsHeader
+
         #endregion //Properties
 
         #region Constructors

ExtendedWPFToolkitSolution/Src/WPFToolkit.Extended/ColorPicker/Themes/Generic.xaml

@@ -185,7 +185,7 @@
                                                     <RowDefinition Height="Auto" />
                                                     <RowDefinition />
                                                 </Grid.RowDefinitions>
-                                                <TextBlock Text="Available Colors" Background="AliceBlue" Padding="2" Margin="0,0,0,1" />
+                                                <TextBlock Text="{TemplateBinding AvailableColorsHeader}" Background="AliceBlue" Padding="2" Margin="0,0,0,1" />
                                                 <ListBox x:Name="PART_AvailableColors" Grid.Row="1" Background="Transparent" BorderThickness="0" SelectionMode="Single"
                                                          ItemsSource="{Binding AvailableColors, RelativeSource={RelativeSource TemplatedParent}}"                                                      
                                                          ItemTemplate="{StaticResource ColorItemTemplate}"
@@ -207,7 +207,7 @@
                                                     <RowDefinition Height="Auto" />
                                                     <RowDefinition Height="Auto" />
                                                 </Grid.RowDefinitions>
-                                                <TextBlock Text="Standard Colors" Background="AliceBlue" Padding="2" Margin="0,1,0,1"/>
+                                                <TextBlock Text="{TemplateBinding StandardColorsHeader}" Background="AliceBlue" Padding="2" Margin="0,1,0,1"/>
                                                 <ListBox x:Name="PART_StandardColors" Grid.Row="1" SelectionMode="Single" Background="Transparent" BorderThickness="0"
                                                          ItemsSource="{Binding StandardColors, RelativeSource={RelativeSource TemplatedParent}}"                                                      
                                                          ItemTemplate="{StaticResource ColorItemTemplate}"
@@ -229,7 +229,7 @@
                                                     <RowDefinition Height="Auto" />
                                                     <RowDefinition Height="Auto" />
                                                 </Grid.RowDefinitions>
-                                                <TextBlock Text="Recent Colors" Background="AliceBlue" Padding="2" Margin="0,1,0,1"/>
+                                                <TextBlock Text="{TemplateBinding RecentColorsHeader}" Background="AliceBlue" Padding="2" Margin="0,1,0,1"/>
                                                 <ListBox x:Name="PART_RecentColors" Grid.Row="1"  SelectionMode="Single" Background="Transparent" BorderThickness="0"
                                                          ItemsSource="{Binding RecentColors, RelativeSource={RelativeSource TemplatedParent}}"                                                     
                                                          ItemTemplate="{StaticResource ColorItemTemplate}"