Colour-magnitude of the stars in the field of view towards the dSph galaxies (the eight classical and one UFD) in our sample. The blue lines mark our (relatively tight) pre-selection of tentative members (on the RGB and BHB) that is fed to the pipeline to derive mean PMs. The coloured points indicate stars within 3σ of our determination of the mean PM of the object. This means that cyan points satisfy both the PM and CMD selections.