问telerik:PieSeries绑定颜色CanFreeze警告

EN

System.Windows.Freezable Warning: 1 : CanFreeze is returning false because a DependencyProperty on the Freezable has a value that is an expression; Freezable='System.Windows.Media.TranslateTransform'; Freezable.HashCode='36319496'; Freezable.Type='System.Windows.Media.TranslateTransform'; DP='X'; DpOwnerType='System.Windows.Media.TranslateTransform'

<Style x:Key="PieSliceStyle" TargetType="Path">
            <Setter Property="Fill" Value="{Binding DataItem.Color}" />
        </Style>

<telerik:PieSeries ItemsSource="{Binding Source}" DefaultSliceStyle="{StaticResource PieSliceStyle}">
                    <telerik:PieSeries.ValueBinding>
                        <telerik:PropertyNameDataPointBinding PropertyName="Value" />
                    </telerik:PieSeries.ValueBinding>
                    <telerik:PieSeries.LabelDefinitions>
                        <telerik:ChartSeriesLabelDefinition Margin="-10">
                            <telerik:ChartSeriesLabelDefinition.Binding>
                                <telerik:PropertyNameDataPointBinding PropertyName="Label" />
                            </telerik:ChartSeriesLabelDefinition.Binding>
                        </telerik:ChartSeriesLabelDefinition>
                    </telerik:PieSeries.LabelDefinitions>
                </telerik:PieSeries>

 private readonly SolidColorBrush PieColorEnableSlice = new SolidColorBrush(Colors.LightGray);
        private readonly SolidColorBrush PieColorDisabledSlice = new SolidColorBrush(Colors.Red);

 public AsyncObservableCollection<MSShareClassModel> List
        {
            get
            {
                return this._list;
            }

            set
            {
                if (this.SetProperty(ref this._list, value, "List"))
                {
                    this.Source = new AsyncObservableCollection<PieChartModel>
                                                          {
                                                              new PieChartModel
                                                                  {
                                                                      Label = "Active",
                                                                      Value = this._list.Count(x => x.Status == "1"),
                                                                      Color = this.PieColorEnableSlice
                                                                  },
                                                              new PieChartModel
                                                                  {
                                                                      Label = "Disable",
                                                                      Value = this._list.Count(x => x.Status == "0"),
                                                                      Color = this.PieColorDisabledSlice
                                                                  },
                                                          };
                }
            }
        }