Aqua is still glowing a little, when the Elements appear. It's not much, but it has the uncanny effect of making it look like she's still a little bit on fire. She isn't, and doesn't seem to be really bothered by it, but it's probably a little odd to anyone who isn't so used to it as she is.

On the other hand, it might not be so odd after the sudden appearance of two pieces of jewelry.