Spectral energy distributions of selected models from series A (see Table 1). Each panel shows SEDs at maximum and minimum light for two models that differ by seed particle abundance only (indicated by line style and color) to illustrate the effect of this parameter. The upper and lower panels, on the other hand, present models with different pulsation amplitudes but otherwise identical parameters. As expected, the models with higher pulsation amplitude (lower panel) show larger spectral variations between maximum and minimum.