tokens: We thank the referee for his/her thorough report, in particular for pointing out the misinterpretation of broad-band colours. TR acknowledges support from CONICYT project Basal AFB-170002. He also acknowledges an ESO senior visitorship, during which the data reductions were performed, which was essential for this contribution. T.H.P. gratefully acknowledges support by FONDECYT Regular Project No. 1161817 and by CONICYT project Basal AFB-170002. Dominik Bomans is thanked for discussions on STARLIGHT and literature hints. We use QFitsView (version 3.2, developed by Thomas Ott and Alex Agudo Berbel at the Max Planck Institute for Extraterrestrial Physics, Garching) for extracting and averaging spectra.
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