Palestinian Arabs, especially those who live in the West, like to define themselves as "people of color" so they can pretend to have solidarity with non-white people. This is of course a cynical ploy - they don't care about the rights of others; they are trying to hijack other movements for their own gain.
But not too long ago, the infamous Mufti of Jerusalem, the first leader of Palestinian Arabs, became good friends with Heinrich Himmler - because he had blond hair and blue eyes.
From the Palestine Post, March 28, 1948:
Other Palestinian Arab leaders in the 1940s who looked more Teutonic than Arab include military leader Fawzi Bey Kawukji, Hussein Khalidi, secretary of the Arab Higher Committee, and Sheikh Hassan Salameh, Arab commander in the Jaffa during the 1948 war.
There is no moral difference between white people mistreating non-white people and Palestinian Arabs pretending to be non-white in order to claim the status of being oppressed. Both of them are taking advantage of people of color for their own selfish aims.