Same as Fig. 2 but for the low-opacity hydro-simulations and sim 6, which has the same optical depth as sim 1 after a ×100 density increase. Again, the background colour is the Rosseland opacity computed only with olivine and water ice to highlight compositional differences. The τ = 1 emission surfaces were again computed with the full opacity model including all species, as was used in the paper to compute spectra.