I haven't seen a 2010 except in pictures, but I would guess they are powder coated or painted They don't look like they are anodized unless they did a really deep anodizing job on them. Even hard coat only adds about .002" of actual coating on top of the aluminum, plus another .002" below the surface. So it's hard to get it heavy enough to make it opaque. Plus it would be more expensive than powder coating.
Honestly, a good coat of paint will hold up for a long time. And if it does need recoated it's a lot easier to strip off and refinish than powder coat. Removing anodizing is hard to do without the right equipment, and it's hard to touch up. The stock finish on the rims is a paint.