Panel a: reproduction of the m_F814W vs. (m_F606W – m_F160W)-0.55(m_F606W – m_F814W) pseudo-CMD of Fig. 2. The MS fiducial is represented with the solid black line, whereas the dotted line is the fiducial of equal-luminosity binaries. The orange lines mark the boundaries of the yellow shaded region that we used to select the binaries (magenta triangles). Panel b: m_F814W vs. C_{F606W,F814W,F322W2} pseudo-CMD. The fiducials of 1P and 2P_D stars are represented with solid red and blue lines, respectively, and the equal-luminosity 1P binaries fiducial is indicated by the dotted red line. Panel c: verticalized m_F814W vs. δ_{CF606W,F814W,F322W2} diagram. Panels d and e: δ_{cF606W,F814W,F322W2} cumulative and kernel-density distributions, respectively.