Gandalf was the Grey, Radagast the Brown, and the two remaining Istari wereknown as the Blue Wizards.
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"Saruman Of Many Colors": Why The Lord Of The Rings' White Wizard Changes Colors In The Fellowship Of The Ring
Saruman was a traitor and a turncoat who threw his lot in with Sauron, and the books portrayed it much more literally than Peter Jackson’s films did.
