Values of the diquark coupling (η_D) and vector coupling (η_V) allowed by specific constraints for a hadronic EoS with m^*/m = 0.65 and B = 100 MeV/fm³ that feature hybrid stars. The band where parameter sets exist that fulfill all constraints is cross-hatched. The specific regions to which η_V and η_D are constrained are indicated with colors that correspond to their respective observables. Red represents GW170817. Green, blue, and orange represent the NICER measurements. Finally, cyan represents the mass constraint. Note that all areas except for GW170817 share a border on the right side, beyond which no stable hybrid stars can be realized.