Comparison of the completeness for giant (orange) and dwarf (green) stars for classification ANNs for different colour combinations as input features that include two broadband colours and trained with a batch size of 64. The horizontal axis indicates the unique ID associated with each colour combination (an integer between 0 and 4454). The four segmented vertical lines separate the combinations comprising different numbers of colours: IDs between 0 and 1574 indicate combinations made up of five colours, values between 1575 and 3149 indicate combinations of six colours, values between 3150 and 4094 indicate combinations of seven colours, between 4095 and 4409 for combinations of eight colours, and values between 4410 and 4454 for combinations of nine colours. Note that the segmented lines divide the figure according to the architecture of the ANN used for training and testing.