Rest-frame N3 − S11 vs. NUV − R (left) and N3 − S11 vs. B −  R (right) color–color distribution of galaxies detected in all four bands, compared with SWIRE templates of Polletta et al. (2007) including three ellipticals (2, 5, 13 Gyr), seven spirals (S0, Sa, Sb, Sc, Sd, Sdm, Spi4), and six starbursts (M82, Arp220, N6090, N6240, I20551, I22491). Also plotted are SSP templates from different libraries (BC03, CB07, Ma05, and Piovan03) with a Salpeter (1955) IMF and a solar metallicity ( Z = 0.02) for the same ages as SWIRE ellipticals. Templates with N3 − S11 > 0 are spirals or starbursts, while early types have N3 − S11 < 0. The arrow shows the mean value of a reddening vector of E( B − V) = 0.1 using the Calzetti et al. (2000) extinction law, and the cross in the bottom right corner indicates the typical errors.