ColumnFilterEditor Styling

Hello,
I tried to style the ColumnFilterEditor control (setting background, border, etc.) – but after some experiments I came to the conclusion, that this is close to impossible….

Lots of ColumnFilterEditor’s properties are "inherited" (actually they are COPIED) from the parent grid.

This is how I tried to define the style:

    <Style TargetType="c1:ColumnFilterEditor" x:Key="ColumnFilterEditorStyle">
        <Setter Property="Background" Value="Green" />
        <Setter Property="BorderBrush" Value="Black" />
        <Setter Property="BorderThickness" Value="5" />
    </Style>

    <Style TargetType="c1:ColumnFilterEditor" BasedOn="{StaticResource ColumnFilterEditorStyle}" />

which does not work, unless I do this in the "EditorOpened" event:

        private void C1FlexGridFilter_EditorOpened(object sender, EventArgs e)
        {
            C1FlexGridFilter cfe = sender as C1FlexGridFilter;
            if (cfe != null && cfe.Editor != null)
            {
                cfe.Editor.ClearValue(ColumnFilterEditor.BackgroundProperty);
                //clear other values that should be styled…
            }
        }

We try to make a very clean style, without grid-lines, header-lines, etc. – but this does not work well for the filterpopup – cause this should have a border….and this border’s color is the FlexGrid’s "HeaderGridLinesBrush"…
(This "easy styling" is killing me….it sure is easy, but unflexible like hell as well….)

Regards
Johannes