You have two choices - either the same color shoes (as per your picture) or a contrasting color. You can choose a pale color like cream/beige or pink or a contrasting color like silver. It really depends on the overall color scheme of your wedding.
What color flowers do you want? If you choose white/pink flowers for instance, the same color shoes/accessories would fit well.
I would suggest looking at a color chart that you can get from a DIY store (for paints) and using that to lay against tthe color sangria to see what catches your eye. At the end of the day, there is no right or wrong answer, just choose a color that you like and that complements the sangria color of the dress.