Top: CMD of the GC NGC 6205 using Gaia DR3. Stars that were discarded as cluster members using our selection procedure are shown as gray dots, while cluster members are plotted as black dots. The blue shaded area represents our selection area for BSSs, YSSs and RSSs (see Sect. 2.2) which are shown as blue, yellow and red dots, respectively. The magenta solid curve represents the best-fitting PARSEC isochrone, with the + symbol indicating the MSTO. The right panels show the VPDs for the stars in the respective magnitude range from the left panel. Green crosses represent the median of confirmed members for both components in the VPD. Bottom: same as the top figure, but for the OC NGC 188. We added a red border in the selection area for OCs to avoid AGB/RGB stars (see text for details).