I think the most important thing is to make sure that the light fixtures in the various areas -- kitchen, breakfast area, and living room -- relate to each other. They don't have to relate to the hardware in, say, the kitchen. Here's a good recent blog post by designer Laurel Bern about getting lighting to co-ordinate, in which she says, "It’s not supposed to match, but it is supposed to coordinate. And by coordinate, I feel that there needs to be some commonality in shape, style and finish– maybe not all three, but some common thread." Leanne, do you have anything in mind already for any of the fixtures? Any inspiration pictures? From what you mentioned about the kitchen table and chairs/stools, what about black, ORB, or even antique brass? You could probably mix those up too (black and ORB, ORB and antique brass), as long as they all read similarly when you stand at one point in the house and see 2 out of 3 fixtures. Also, how big is your island that it needs 3 pendants? You mention a ceiling fan. I know a lot of people on GW don't like them, but I do. I live in a more northern climate that doesn't require air conditioning, but we do get hot days and for that a fan is great. If your ceilings are white, I would get a white fan so that it sort of "disappears" into the ceiling. But I have to admit I prefer my fans without integral lighting.

Mixing metals is very on trend right now. To make it work best, include a few other pieces (they can be small decorative ones or maybe officer organizers) in the metal finishes to tie it all together. So for example, adding an ORB pen holder and a Nickel frame.

The hardware type and finish should reflect the style of the home. I don't know what style your home is. So in general .... I would not put black hardware on white kitchen cabinets. The safest choice there is brushed nickel. And then I would try to make sure that the pendants in the kitchen "correspond" to the dining room chandelier and so would probably do the same finish for both and I would not choose black. I would NOT do navy blue walls.

Here are some examples