Top: wavelength dependence of the relative flux increase for the burst (red) and post-burst (green) epochs for mean model. Markers denote grid points. Bottom: wavelength dependence of the speed of the relative flux change m for the pre-burst to burst (blue) and burst to post-burst (green) periods. The black solid lines mark linear fits to λ > 10 μm, the dashed vertical lines indicates the wavelengths used by Contreras Peña et al. (2020). The black dots mark the values for m used to compare our models to Contreras Peña et al. (2020).