Left: comparison between the two best fitting MARCS models. Black points mark the photometric points from the progenitor. The horizontal uncertainties simply denote the width of the photometric band. Inset are the residuals between the photometry and the SEDs for both fits. We note the large disagreement between the SEDs and the g′ band point at 0.46 μm. Right: comparison between the high temperature, high extinction MARCS model and the best fitting PHOENIX model. The PHOENIX model appears to fit the blue g′ band much better, however it overestimates the flux in the optical >6500 Å. The mid-IR points (Table A.1) are not shown here for clarity and ease of comparison with previous studies.