spectrum (all 3814 objects). Although we do not know how much reddening is included in the EDR composite, we arbitrarily define the EDR composite reddening to be zero. Thus, the measured reddening values do not indicate absolute reddening but rather reddening relative to the EDR composite spectrum. For reference, we computed the spectral index of the EDR composite spectrum to be $\alpha_{\lambda}=-1.58$ by fitting a power law to points near $\lambda = $ 1355 [$\rm{\AA} \;$]{}and 2240 Å.

Broad-band UV/Optical Colors of BALQSOs \[sec:colors\]
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We can begin addressing the question of the continuum differences between BALQSOs and nonBALQSOs by investigating the differences between their broad-band colors. (2001) and (2002) have already shown that the broad-band colors of BALQSOs are redder than those of nonBALQSOs. In the color-color plots in Figure \[fig:fig6\] we expand upon this result using the full sample of (2003). The panels in Figure \[fig:fig6\] include all EDR nonBALQSOs (gray “x”s) and EDR BALQSOs (open black squares, HiBALs; filled black triangles, LoBALs) with redshifts between 1.8 and 3.5 (where our BALQSO sample is most complete). It is clear that BALQSOs are redder than nonBALQSOs on the average. In particular, it is obvious that the apparently bluest nonBALQSOs 