Typical results of a STARLIGHT decomposition for our characteristic spectra. Indicated is the population composition in percentage of light at 5650 Å of all populations involved in the fit. The colours denote metallicities. Black: z = 0.0004; blue: z = 0.008, green: z = 0.02, red: z = 0.05. The individual uncertainties, particularly those at low percentage values, are probably high and determined by many systematics. Therefore this must not be confused with a determination of the star formation history. Rather it confirms what has been suggested by broad-band photometry. Further discussion of this can be found in the text.