Zoomed view of the (a) (m_F606W − m_F814W; m_F606W) and (b) (m_F336W − m_F336W; m_F606W) CMDs obtained with the HST sample. Error bars as a function of magnitude are also shown. Red and blue dots are, respectively, FG and SG stars. In panels (c) and (d), theoretical models with different light-element mixture (Sbordone et al. 2011) and similar metallicity to NGC 6362 are shown for comparison. The blue isochrone has a standard light-element composition, while the red one is appropriate for a Na-rich population.