Complex sentence: The school's colors, black and gold, were selected by a student body vote shortly after the school was founded, and while mascots, names, customs, and the campus have changed, the black and gold colors have remained constant.
Split into simpler sentences: The school's colors, black and gold, were selected by a student body vote shortly after the school was founded. While mascots, names, customs, and the campus have changed, the black and gold colors have remained constant.