1. A light source apparatus, comprising:a light source unit; and
a control unit configured to perform lighting control to light the light source unit, wherein
the light source unit emits first color light at a first timing, and emits second color light at a second timing which delays after the first timing by a predetermined period, in accordance with the lighting control by the control unit, and
the control unit performs a plurality of times of lighting control based on the predetermined period, so that at least a part of a period in which the light source unit emits the second color light in accordance with a first lighting control overlaps with at least a part of a period, in which the light source unit emits the first color light in accordance with a second lighting control, which is performed after the first lighting control.