Proper Path reference for multiBinding converter parameter with combobox control - wpf

Question

With all the styling information around controls, and what's nested, control template, and triggers all around, I'm trying to figure out the following.
Take a combobox control. it has a control template for the toggle button component which shows the normal display in standard display (not drop-down mode) which shows the display value and toggle button to activate the drop-down.
<ControlTemplate TargetType="ToggleButton" x:Key="baseComboBoxToggleButton" >
<!-- overall border covering left side display value and the actual toggle button -->
<Border x:Name="Border" Grid.ColumnSpan="2" />
<!-- area in left side (column=0) that shows the DISPLAY value -->
<Border x:Name="ShowDisplayValueArea" Grid.Column="0" />
<!-- second column using a path to draw the glyph down arrow -->
<Path Grid.Column="1" />
<Triggers for the toggle button ... />
</ControlTemplate>
Then, you have the main combobox control that uses the template of the toggle button above
<ControlTemplate TargetType="ComboBox" x:Key="ComboBoxGridControlTemplate" >
<Grid>
<ToggleButton Name="ToggleButton"
Template="{StaticResource baseComboBoxToggleButton}"
... />
</Grid>
</ControlTemplate>
So, I'm trying to ULTIMATELY change the background color of the "ShowDisplayValueArea" based on the results of a MultiBinding converter. If I place the multibinding converter in the toggleButton control template area such as..
<MultiBinding Converter="{StaticResource myMultiParmConverter}">
<Binding Path="." RelativeSource="{RelativeSource Self}" />
</MultiBinding>
The first "value" in the values object array is correctly passing the instance of the toggle button control template. The entire object reference, not just the name.
public object Convert(object[] values,
Type targetType,
object parameter,
CultureInfo culture)
So, how I tell the Binding parameter to pass the actual Combobox that the toggle button came from (ie: the parent to the toggle button) so I get the actual entire combobox control passed as the parameter.

Answer 1

Found it... completely by accident...
While in the debugger of my converter class, I was looking at the object reference in the debugger window. Then, since it was an object, I clicked on the magnifying glass to the right side of the "Value" column. Doing so, brought up the "WPF Visualizer" (never used/seen that before). So, seeing it from that perspective, and saw that it's "TemplatedParent" was actually the object I wanted. There were obviously other properties I could consider playing with at some other time, but the TemplatedParent was the one I wanted.
So, I changed the binding from
<Binding Path="." RelativeSource="{RelativeSource Self}" />
to
<Binding Path=".TemplatedParent" RelativeSource="{RelativeSource Self}" />
and correctly got the actual Combobox control passed as the argument to my converter. Now, I can utilize any/all properties of the combobox directly in the converter without having to explicitly pass them all individually.