Answer:
This portrait is by Diego Velazquez called Philip IV on Horseback. Equestrian portraits became common because it was believed that leaders looked especially powerful atop a large, powerful beast (horse)
red, yellow, green, blue, purple, black
Explanation:
Symbolic proportion is the apparent disproportionate relationship between objects within a piece.
Others define symbolic proportion as the creation of an apparently disproportionate relationship in order to convey the importance of something.