  Molecular exciton effects in the neutral and maximally doped C$_{60}$
(C$_{70}$) are considered using a tight binding model with long-range Coulomb
interactions and bond disorder. By comparing calculated and observed optical
spectra, we conclude that relevant Coulomb parameters for the doped cases are
about half of those of the neutral systems. The broadening of absorption peaks
is well simulated by the bond disorder model.
