Sentence:  The dogmatism of youth was perfected in the criticism of manhood, and revealed in the ethical exotericism of old age. Yet, with all the multifarious content of his thinking, and the <WSD>chameleonized</WSD> forms it was led to assume, there runs through it all a common trait. 
Meaning of the word marked with <WSD> tags:  To cause to change colour or turn various colours; to transform (to suit changing circumstances).