Proposed internal structure of AGB star

Shows the internal structure of an AGB star; the different layers. 

Inspired by several sources:

colors and style - https://www.noao.edu/outreach/press/pr03/sb0307.html

structure - http://astro.hopkinsschools.org/course_documents/stars/big_picture/redgiants.htm and others.

Update 1/8/2014 : Improved the core shape, and changed the colors, hopefully for the better