Color-color diagrams for all sources with multiwavelength photometry in the core region of the Fornax cluster, shown as gray dots. Spectroscopically confirmed samples of GCs (blue), stars (gold), and galaxies (purple) are highlighted and used as labeled samples for the svm.SVC model (see Sect. 4.2). Note: the different panels show the same source sample, for which photometric information was obtained from the master catalog cross-matched across the u′g′i′JK_s filters.