The Properties of Spiral Galaxies in Semi-Analytic Galaxy Formation   Models
  We examine the present-day galaxy disk colors and star formation rates (SFRs) in the semi-analytic model of Cole et al. (2000). We find that the fiducial model is a good match to Kennicutt's (1998) observed global star formation law, the color-based metallicity-magnitude correlation and the colors of low-luminosity galaxies. The main limitation of the model, from the point of view of present-day spirals, is that the optical colors of the disks of very luminous spiral galaxies are too blue, even after accounting for the effects of dust. 
Eric F. Bell (Steward), Carlton Baugh, Shaun Cole, Carlos Frenk   (Durham) and Cedric Lacey (SISSA)