Two-color absorption difference profiles for the bacteriochlorophyll (BChl) c antenna of chlorosomes from Chloroflexus aurantiacus at 19 K show photobleaching/stimulated emission rise features with similar to 300 fs kinetics when the probe wavelength is similar to 30 nm to the red of the excitation wavelength. Similar rise features do not appear at 300 K, or in uphill two-color experiments at 19 K, or when the pump and probe wavelengths are separated by much less than 30 nm. This appears to be the first direct observation of downhill electronic energy transfers within light-harvesting BChl c oligomers in intact chlorosomes.