I don't know if you'd care about this or not but I thought I'd offer it and let you decide. This just adds another language to the highlighting plugin.
In general, is expanding the language support something you'd be interested? I could add more, but right now ObjC is the only one I'm personally interested in.
Add Objective-C formatting
I don't want to add too many out of the box, but Objective C definitely makes sense :)