'80 Varsity Sport, Cardinal Red. The later Cardinal Red. Could be orange but the oranges were more orange than that one it appears.
'73, ,74 and others had a more orange color. That reflector reflects a later model, '80
Accurate way would be serial #. Super Sports had C.pull brakes & Collegiates had somber colors.
In the final analysis it matters little, for some 2 decades the song remained the "same"