1. An image processing apparatus comprising: an obtaining unit configured to obtain a relationship between an adjustment amount of a print parameter and an evaluation value indicating a stability of colors; an obtaining unit configured to obtain information indicating a number of prints which are to be printed continuously; an evaluating unit, implemented using a processor, configured to evaluate stability of colors by referring the relationship in a case where the number of prints are printed in a continuous manner and to adjust the print parameter based on the number of prints; and a setting unit configured to set the print parameter based on an evaluation result obtained by the evaluating unit.