The Roman artist excelled in painting on house walls, where wall painting formed an integral part of house architecture. It expressed the personality of the resident, their religion, social status, and daily lifestyle. And each time period left a distinct mark that differs from other periods in all its details, and this was evident in the colors. After the dominance of Egyptian blue in previous ancient eras in specific locations, this prosperity diminished during the reign of the Roman Empire. The colors used in the paintings varied, and we can imagine that in each region, people began to discover the resources of their region and their components. They attempted to produce materials suitable for coloring, and these materials evolved within the same region over time. Some were renewed, and the best of them discovered the superior ones. We will know on about the sources of these colors on these pages.