Need opinions on mother's dress choice

Hi ladies,



I just need some input on what everyone thinks about my mother's dress choice. She recently went shopping and found a dress but the only thing is is that it is black. I actually love the dress regardless of color but my sister and dad questioned why she would wear black to a wedding. From my stand point I disagree i dont feel like it's wrong for her to wear that color. I am having an intimate wedding and our ceremony is only going to last around 30 minutes then we are having dinner at a restaurant which is why I didnt see the big deal of her wearing a black dress. I am basically looking for other people's perspectives on whether or not it is inappropriate or if it's not a big deal.