[Enhancement] DynamicResource color is not dynamic changed when cellbase IconSource is FontImageSource

[liuww06]

Description

I use FontImageSource as IconSource in cellbase .I want use dynamic color by DynamicResource ,but the result is not expected:color is not changed .Code is below:
<sv:CommandCell > <sv:CommandCell.IconSource> <FontImageSource FontFamily="{DynamicResource IconFontFamily}" Glyph="{x:Static fontIcons:FontIcons.Avatar}" Color="{DynamicResource AvatarColor}"/> </sv:CommandCell.IconSource> </sv:CommandCell>

I do the same work in ImageButton , and the color is changed as expeced.
<ImageButton> <ImageButton.Source> <FontImageSource FontFamily="{DynamicResource IconFontFamily}" Glyph="{x:Static fontIcons:FontIcons.Avatar}" Color="{DynamicResource AvatarColor}"/> </ImageButton.Source> </ImageButton>