I can't see them but I'll say yes. If they aren't ten years old. Often it's the cocoa butter that separates out a little, usually more white than grey but that grayish color is also depends on the brand and how they are produced. Besides, I've eaten LOTS of chocolate and never had any that had gone bad.
They were inside a box of Duff Goldman's Blondie brownie mix which I bought this Spring. I ended up tossing out the dough. It was so thick I couldn't spread it into my square pan. I thought I would at least keep the chocolate morsels which was included in the brownie mix. The expiration date on the box is August 31, 2016.