University of North Dakota students selected rose pink and green as their school colors in 1889. Green symbolized the grass of the prairies and rose symbolized the “rosy prospects” of the students after graduation. The school colors were also meant to honor the prairie rose and the green of its leaves. The university typically used a light and bright green hue during this period, but there were exceptions to this general rule.
Citations in the World Almanac (listed by cover date; color information is from the previous year): pink/green (1900-1910); rose/green (1911); pink/green (1912); rose pink/green (1913); pink/green (1914-1918); rose pink/green (1923-1931); pink/green (1934-1935)
“Wheat green” and “apple green” were synonyms for a light but saturated shade of green, whereas “rose pink” typically described a cerise color rather than (plain) pink.