Need some second opinions on cabinet hardware

I'm going to be moving into a new apartment next month and there's no hardware on the kitchen cabinets at all. The kitchen has all the usual modern amenities -- the appliances are stainless, the countertops are gray granite, the cabinets and floors are a light wood -- probably oak -- and the walls are painted a medium shade of sage green. The landlord has given permission to add knobs and/or pulls, so all I need to do is pick something out. I've been looking at a lot of hardware the last couple of weeks, and I think I'm beginning to overthink this. I've found lots of knobs that I like, but am confused about which way to go as far as color and design are concerned. I would like to put knobs on the cabinet doors and pulls in a coordinating design on the drawers. Since the kitchen is modern, my first thought was to go with a contemporary style metal knob, but I also find myself gravitating toward something different, like ceramic or glass. I like the idea of using a different design knob within the same style/color on each cabinet for a fun look. I was also thinking of using copper knobs for a mixed metals look, as you might with jewelry. So what I need from all you wonderful Hometalkers is direction/assistance/advice/opinions in deciding whether to accent the appliances, the wall color or the cabinet color.

Below are pics of some of the knobs I'm considering -- what do you think ?