Left panel: H − K_s colour evolution of SN 2022jli (black circles) compared with the colour evolution of the type Ic SN 2016adj (teal X symbols; Stritzinger et al. 2024), SLSN 2015bn (cyan pentagons; Nicholl et al. 2016b), type IIb SN 2011dh (blue diamonds; Ergon et al. 2014, 2015), the type Ic SN 2007gr (red hexagons; Hunter et al. 2009) and the type IIn SN 2005ip (purple plus sign; Stritzinger et al. 2012). The horizontal dashed lines correspond to the H − K_s colour of a given black-body temperature as indicated in the figure for comparison. Right panel: Evolution of the NIR SED of SN 2022jli from +238 to +600 days. A full NIR spectrum of SN 2022jli at around +422 days is presented, and for comparison a black-body SED having T = 945 K is presented for comparison (dashed red line). The dotted lines correspond to dust SED fitting results to the H, K_s and W1 photometry of graphite dust with a radius of 0.1 Å, using the Q_abs from Draine (2016).