FillFormat- LineFormat for Placeholders and their shapes

The FillFormat property “Type” always returns NotSupported for TextHolder and its corresponding TextFrame whether it is Solid or NoFill. Additionally, LineFormat’s “ShowLines” returns false for TextHolder / TextFrame regardless of what it should be. These properties work fine for shapes that aren’t placeholders, but don’t seem to work when a placeholder is involved.

To add to the list, if the Alignment property of a paragraph is Default, is there a way to find out what that default is for a given TextHolder / TextFrame?
Thanks!

Thanks. I will check fill properties.

Default alignment is a left alignment except holders which has “Center” in his name. For example CenteredTitle. The problem is not all PlaceholderType names are correct.
Teoretically I can fill all paragraphs with real alignment values.