I'm noticing that the post count for the posts that people posted* via the iphone app are purple rather than the usual colors for read or unread. Is this on purpose? Are realtime posts that don't come from the phone app also purple? Is there a distinction between a read realtime app and an unread one?

I'm curious because my brain finally got used to the unread/read/new messages coloring but now I'm skipping over the phone posts because I think I've read them.

(*could I write the word 'post' more in a sentence? I think not. That would be adjective, noun and verb, if anyone's keeping track. Oh, English.)