Cell attributes won't show any change about prettytable-rs HOT 10 CLOSED

for .. in .. {
    let mut index_cell = Cell::from(&index);
    index_cell.align(Alignment::RIGHT);

    let mut item_cell = Cell::from(&item.name);
    item_cell.style(Attr::ForegroundColor(0x00AAFF));
    table.add_row(Row::new(vec![index_cell, item_cell, cell!(amount)]));
}

            let ph_name_table = |phdr: &elf::ProgramHeader| {
                let typ = phdr.p_type;
                let name = program_header::pt_to_str(typ);
                match typ {
                    program_header::PT_LOAD    => Cell::new(name).style_spec("Fr"),
                    program_header::PT_INTERP  => Cell::new(name).style_spec("Fy"),
                    program_header::PT_DYNAMIC => Cell::new(name).style_spec("Fc"),
                    _ =>  Cell::new(name),
                }
            };
            for (i, phdr) in phdrs.into_iter().enumerate() {
                let name_cell = ph_name_table(&phdr);
                let flags = ph_flag(&phdr);
                table.add_row(row![
                    format!("{} ", i),
                    name_cell,
                    format!("{:>4} ", flags),
                    Fy->format!("{:<#x} ", phdr.p_offset),
                    Fr->format!("{:<#x} ", phdr.p_vaddr),
                    bFr->format!("{:<#x} ", phdr.p_paddr),
                    Fg->format!("{:<#x} ", phdr.p_filesz),
                    bFg->format!("{:<#x} ", phdr.p_memsz),
                    format!("{:#x}", phdr.p_align)
                ]);
            }
            table.print_tty(self.opt.color);

table.add_row(Row::new(vec![
                    cell!(format!("{} ", i)),
                    name_cell,
                    cell!(format!("{:>4} ", flags)),
                    cell!(Fy->format!("{:<#x} ", phdr.p_offset)),
                    cell!(Fr->format!("{:<#x} ", phdr.p_vaddr)),
                    cell!(bFr->format!("{:<#x} ", phdr.p_paddr)),
                    cell!(Fg->format!("{:<#x} ", phdr.p_filesz)),
                    cell!(bFg->format!("{:<#x} ", phdr.p_memsz)),
                    cell!(format!("{:#x}", phdr.p_align))
                ]));

cell!(Fy->format!("{:<#x} ", phdr.p_offset))

format_cell!("Fy", "{:<#x} ", phdr.p_offset)

cell!(Fg -> "foobar")

cell!("Fg":"foobar")