GCLF for the blue and red GC components analyzed separately. The upper panels, from left to right, show the total density distribution Σ(R_gal ≤ R_bg), the density after subtracting for background contamination Σ_Host, and the edge and edge2 functions. The vertical dashed line marks the approximate position of the TOM, as obtained from the edge functions. The green line shows a Gaussian with peak at mag. Lower panels: as upper ones, but for the red GC components, with mag.