Color profiles for the six BL Lac objects with images in multiple WFPC2 filters. None shows a strong gradient outside 1^{﹩\arcsec﹩}. The horizontal line represents the expected color for a normal elliptical galaxy at the redshift of the BL Lac. The profile of 1538+149 is bluer than expected, especially at the center, but the bluer (R‐band) image is the weakest detection of this set.