Relation between luminosity and color for a (semiresolved) stellar population with varying N_stars. The M_r is shown as a function of the (g − r) color for 300 FASTAR semiresolved stochastic realizations with the same age (10 Gyr), metallicity (solar), and IMF (P. Kroupa 2002) but varying N_stars. Importantly, age, metallicity, and N_stars do not uniquely define the color and absolute magnitude of the models, and each symbol corresponds to a different, stochastic IMF sampling. Symbols are color-coded by the number of stars contained in each model realization, and the blue vertical line indicates the FASTAR SSP prediction for a fully sampled IMF. Gray boxes indicate the relation between different evolutionary phases and the predicted colors and absolute magnitudes.