InvalidOperationException: “#FFFFFFFF”不是属性“Color”的有效值

[jack-ningtz]

Describe the bug

         <hc:DateTimePicker  
             x:Name="edate"
             hc:InfoElement.TitlePlacement="Top" 
             hc:InfoElement.TitleWidth ="100" 

             Style="{StaticResource DateTimePickerPlus }"
             Width="220" 
             HorizontalAlignment="Left" 
             hc:InfoElement.Title="结束"
             Margin="5,0,0,0"
             hc:InfoElement.Placeholder ="日期" 
             HorizontalContentAlignment="Left"
             DateTimeFormat ="yyyy-MM-dd HH:mm"
             FontSize="16"
             ShowClearButton="True" 
                 >

点击报错

Steps to reproduce the bug

System.Windows.Markup.XamlParseException:““#FFFFFFFF”不是属性“Color”的有效值。

Expected behavior

No response

Screenshots

No response

NuGet package version

None

IDE

No response

Framework type

No response

Windows version

No response

Additional context

No response

[jack-ningtz]

请问怎么回事？