Would be nice if you posted pictures. Not everyone who might like to answer wants to go to the bother of searching in the net for that pattern to see what it looks like. But...off the top of my head silver serving dishes would work well, and certainly not be too matchy-matchy nor even Kate Spade-ish.

Hi octoberdana! I have this set too, so no need for pics :) I already had a bunch of white serving dishes from the Pfaltzgraff Filigree line and they go really well. It is a lot of white but once you put the tablecloth, runners, place mats, centerpieces, etc., on the table the white dishes look really nice. If you don't do a lot of other stuff on the table you can really pick any color since the platinum will go with anything. Grey is really popular now but it might make the food look a little blah. Food almost always looks yummy in red. You might also try an eggplant color. The food would look good in it and the deep purple color would look really nice against the white/platinum of the china. I would steer clear of yellow, gold, and orange tones though as they may clash with the china. At the end of the day though, the right choice is really whatever makes you happy! Good luck!

Looks like a lot would go well with this. The addition of a floral could mesh well, also maybe Greek keys or even a more pronounced scrollwork.