Which word would describe a performance characterized by overly bright decorations?

The word "garish" aptly describes a performance that is characterized by excessively bright and flashy decorations. "Garish" conveys the sense of being showy or gaudy to the point of being in poor taste, indicating that the decorations are not only bright but also likely overwhelming or ostentatious. This aligns well with the idea of a performance that lacks subtlety and leans towards an extravagant or loud aesthetic.

In contrast, "subdued" refers to something that is restrained or understated, which would not apply to a performance featuring overly bright decorations. "Simple" and "minimalistic" imply an absence of adornment or complexity, both of which conflict with the idea of a performance that is richly decorated and visually striking. Therefore, "garish" is the most fitting choice for describing a performance marked by overly bright decorations.