Maps of the color-selected galaxy overdensities around MOO J0917−0700 and MOO J2146−0320, as measured by Spitzer/IRAC. Overplotted are the contours of the SZ models of the two clusters, as in Fig. 6. In both cases the elongated morphology of the galaxy density distribution may support the merger scenario. The light gray points denote the positions of the individual IRAC-selected galaxies. For display purposes, the galaxy overdensity maps have been preliminary smoothed by a Gaussian kernel with standard deviation of ∼12 arcsec.