Word of god says no — so this is probably not an example.
Rorschach's patterns on his mask in Watchmen (which he occasionally describes as "his real face") can be seen as either an aversion or subversion of this trope. The mask is designed to continually shift, but these patterns are mostly random and his actual emotions are conveyed entirely through body language. There is a pattern shown consistently when he is surprised, however.
There's also one for sarcasm.
Are you sure that's the case, and you're not just reading ink blots?
This is the subject of much debate among the fans - Word Of God has been cited as saying that the inkblots are random, but the counter-argument is that his face will press against the material differently with particular emotions, and therefore produce recognizable blots for distinct feelings.
Camacan moderator
topic
05:07:38 PM Nov 9th 2010
This appears to be a bit off-topic.
Speaking of GI Joe, in the comic the Joes carried an Idiot Ball regarding Snake Eyes. Supposedly, he would not show his true face, so it was understood by the Joes that when he was off-duty or undercover, he would wear a Latex Perfection face mask... but it was obviously just his real face. In one issue, when he was vacationing with Duke and Scarlett, he received some bad news via telegram. Duke's observation?
"Hey, it's creepy the way that mask of yours shows facial expressions!"