For several decades in the 20th century, Oregon's uniforms were traditional, generally featuring a yellow helmet (with the original interlocking "UO" emblem) and yellow pants, joined with a green home jersey with gold letters or white road jersey with green letters and "UCLA-style" shoulder loops. During the Jerry Frei era (1967–1971), the helmets were solid green with subtle logo variations. In 1972, new head coach Dick Enright returned the yellow helmet with Green Bay Packer-style green and white striping and no logos, a helmet style that continued until 1977, when new head coach Rich Brooks added the green block-style interlocking "UO" emblem. In 1985, the team added the Oregon Donald Duck logo to the jersey sleeves. Mike Bellotti made subtle changes in the livery, removing the striping from the helmet, jersey and pants, and adding a green variation of the pants.