`<Rectangle Uid="a8" Grid.Row="0" Grid.Column="1">
<Rectangle.Fill>
<ImageBrush ImageSource="/Chess;component/Images/blackRook.bmp"></ImageBrush>
<SolidColorBrush></SolidColorBrush>
</Rectangle.Fill>
</Rectangle>`
SolidColorBrush is having blue underline with message "Fill property is set more than once"