ICL isocontours superimposed on the original images in the six HST ACS and WFC3 filters. For each band, we plot ten logarithmically spaced isocontours. The lowest level is calculated from the detection limit of the ICL (where it converges with the background level), and the highest level corresponds to its maximum value. We report the surface brightness limits for the lowest and highest isocontours inside each panel. Two main ICL clumps appear in all bands. They are more clearly separated in the bluer filters.