Synthetic spectra of MSG models with TiO₂ nucleation at T_eff = 2400 K (blue), 2100 K (orange), 1800 K (green), and 1500 K (pink), with log(ɡ) = 4.0, and the respective cloud-free spectra at the same T_eff and log(ɡ) in grey. The emergent fluxes are normalised with respect to the cloud-free MSG spectra, i.e. $F_{\text{norm }}(\lambda )=F_{\text{cloudy }}(\lambda )/F_{\text{cloud-free }}^{\max }$, where F_norm is the normalised flux, F_cloudy the flux from the cloudy model, and $F_{\text{cloud-free }}^{\max }$ the maximum flux from the cloud-free model within the full wavelength range considered (~0.4 µm–20.0 µm). An arbitrary offset is added for clarity. In the top left plots we show the NIR range, in the top right the Y and J bands, in the bottom left the MIR, and the bottom right the thermal infrared. Important absorbers are respectively labelled.