Rest frame U−V versus V−J diagram. Galaxies with disc colours compatible with their field counterparts are shown in green. Galaxies that are still forming stars, but whose discs are nonetheless redder than their field counterparts, are plotted in orange. Galaxies with red discs that are on the red sequence are shown in red. Large circles identify galaxies that have been detected at 24 μm with Spitzer and have log L_IR ≥ 10.91 (SFR ~ 14 M_⊙/yr. Plain colours identify face-on galaxies. The three squares correspond to the three galaxies in Fig. 11. The models of Maraston (1998) and Maraston et al. (2003) are shown as dot-dashed lines, and a few ages of the single stellar population are indicated.