Final answer:
Julie Mehretu's 'Grey Space' is not a small-sized painting; this is the incorrect statement as her works are known for their substantial scale and complex layering.
Step-by-step explanation:
The question revolves around Julie Mehretu's painting known as Grey Space. Mehretu is known for her large-scale paintings which are often filled with a multiplicity of marks and layers representing maps, architectural details, and urban layouts. Mehretu's work usually embodies abstract images of historical events and geographical formations and employs a myriad of marks, ink lines, and abstract elements that contribute to their complexity and depth. Considering the nature of her paintings, the statement that Mehretu's Grey Space is a small-sized painting is not true, as her works are recognized for their substantial scale. Color and abstraction play an important role in Mehretu's art; she strategically uses color alongside abstract marks to reflect her thematic concerns, creating a unique visual experience for viewers.