Caulk Color?

I feel like I should be able to figure this out on my own, but I'm struggling. We need to recaulk various bits of granite in our kitchen (both between two pieces of granite, and between the granite and the wall), and I have no idea what color to use. Typically I'm either using white or clear caulk for things, but both feel wrong here. What should I use that won't look stupid? Some kind of gray caulk?