Comparison of optical (4000–7000 Å) model spectra (PHOENIX spectra Husser et al. 2013 interpolated using the STARFISH package Czekala et al. 2015, 2018) showing the influence of temperature changes and mixing of different temperature components, normalized so that the spectra are equal to one at the peak of the spectral energy distribution (∼1.5 μm) with the same wavelength sampling as in Levesque & Massey (2020), although not convolved with the line response function. All three scenarios outlined in the text have rather similar spectra, and are qualitatively similar to Figure 1 in Levesque & Massey (2020).