My Naga has had these brown scales on her belly since I got her a few months ago, and they have stayed the same ever since. I'm pretty sure it's just her natural patterning, but I want to get a second opinion. so, what do you think? Is it scale rot, or just her natural pattern? (Sorry about the bad quality photos)

http://imgur.com/YpO7P5e,8qGVEW7,JAovLSX
http://imgur.com/YpO7P5e,8qGVEW7,JAovLSX#1
http://imgur.com/YpO7P5e,8qGVEW7,JAovLSX#2