Colour-magnitude diagram of Dataset A with the normalized BP and RP flux excess colour-coded according to the colour scale shown on the right of the figure. The colour scale has been limited between 0.7 and 1.5, sources with C′ values outside this range being rendered in the colour at the respective end of the scale. Sources with C′ < 0.9 have been plotted on top of other sources for better visibility as they contain a very small number of sources compared to the size of Dataset A.