Distribution of the observed continuum colors, (C6563/C4861), as a function of the spectral types of the ULIGs in the 1 Jy sample (solid lines) and the BGS LIGs of Veilleux et al. (1995; dashed lines). The nuclear continuum of Seyfert 1 ULIGs is significantly bluer on average than the continuum of all other classes of objects. There is also a tendency for the continuum colors of ULIGs to be bluer on average than those of LIGs.