Yeah, this is odd. This is the first time I've heard of this. Can you check Messages > Settings if there's any option that makes the icon change color?
Hmm.. Are you using a home launcher app to customize the theme of the phone?
Well that's odd. Can you check if you have any unread text messages? With regards to camera flash, this phone doesn't have it.
No. Nothing at all! Also, how do I make the camera flash on this same phone? Thanks!