Article continues below advertisementVain Donald Trump has stopped dyeing his hair and, according to White House insiders, privately suggested he may be dead within a decade - in a striking departure for a president who has long projected invincibility.OK! can reveal the 79-year-old U.S. president, now in his second term, is said to have allowed his infamous golden hair to turn white in what one senior aide described as "a huge concession to the reality of aging.