§ Spiral Dynamics
Graves have found that there are striking similarity between Beige and Yellow: Beige is concerned with the survival of the self, and Yellow is concerned with the survival of the whole.
Graves therefore assumed that spiral dynamics has multiple tiers, and after first 6 stages, another 6 stages follow that mirror the first tier, but on a higher level of existence.
Don Beck and Ken Wilber later confirmed that Turquoise has many similarities with Purple.
Ken Wilber later denied Coral to be the new Red, and made second tier to consist of only Yellow and Turquoise.