Students and faculty at the Throop Polytechnic Institute selected orange and white as their school colors in 1892.
Citations in the World Almanac (listed by cover date; color information is from the previous year): orange/white (1906-1935)
The Intercollegiate Bureau of Academic Costume (IBAC) originally assigned the College of William and Mary a hood lined orange with a white chevron no later than 1912, but between 1922 and 1924 the college adopted new colors of green, gold, and silver and was reassigned a new hood lining pattern with these three colors. The IBAC then assigned William and Mary’s former hood lining to the California Institute of Technology, which was cited in an Intercollegiate Bureau list from 1927 and in every IBAC list thereafter as having a hood lined orange with a white chevron.