(Plz help) What did wealthy romans use to decorate the wall of their homes?

And what was the subject of these decorations

Wealth Romans of ancient times had their homes decorated with ceramic tiles on the floors and sometimes on the walls. Mosaic in geometric patterns as well as in pictorial form where the most common usage of ceramic tile. There were also wall paintings that were a forerunner of fresco paintings, as well as wall niches with statuary and decorative pottery,