Through perception of the viewer painting is recognized and analysed. for a painting to become appealing to the viewer, It must contain a common grounds or touch a certain emotion. That is the reason why people usually have some sort of expectations when going to a museum as they know experiencing the connection between the painting and themselves will lead to the perception of discovering a common ground. This connection is contained not only by the openness of the viewer but also the techniques the painter uses to express beauty of the painting. Alberti mentions how perceiving black and white are different from each other as one offers peace and the other darkness.

By anture, we tend to move forward to the more clear view we have. Reason why our view of the white on a painting should be closely examined is because white is something that we expect to find peace in.Something that could contribute a lot to a painting should be valued. On this subject Alberti emphases on Zeuix to express this understanding of using white and how the excessive usage should be avoided to achieve expressing peace. Although Zeuix's painting didn't survive, to evaluate a painting from his aspect could be beneficial to see that white appeals to human emotions in clear and peaceful way if it is used just the right way. 

Cleopatra Dissolving the Pearl

This painting is mentions on 'On Painting' as the right way if using white to express peace. The shining face of Cleopatra and the pearl are distinctive colored on a dark surface.