You have options!

What's great about your current palette is it's neutral and timeless! The black (or blackish) hardware and light fixtures really pop within the white and light grey surroundings. Consider continuing with this high contrast when adding in wall decor and furnishings.

The table you have selected looks great! The black metal chairs pictured with it or something similar would compliment the table nicely. Think about a couple of upholstered chairs for the head chairs to incorporate some texture and break up some of the hard surfaces. Add a pop of color, organic elements, and mixed materials in your accessories to add some warmth.

Happy shopping!