Final answer:
Andy Warhol chose dynamic and unnatural colors in his artwork for emotional expression, particularly to reflect and critique consumer culture and mass production. His use of silkscreen printing paralleled this use of color to distance the personal touch of the artist and emphasize the mass-produced feel of his subjects.
Step-by-step explanation:
The primary reason Andy Warhol chose dynamic and unusual colors in his artwork is emotional expression. Warhol's Pop Art, exemplified by his famous Campbell's Soup Cans, used vibrant colors and repetition to reflect consumer culture and make a statement on mass production and mundanity in society. Unlike the traditional techniques of painting which he found too personal, Warhol employed silkscreen printing which allowed for the incorporation of chance and a removal of the artist's hand, emphasizing the mass-produced feel. This technique paralleled his use of bright, sometimes unnatural colors to evoke a reaction and engage the viewer's connection to societal norms and pop culture.
Artists like Kandinsky and Klee, who were part of the Abstract Expressionism movement, also used vivid colors to express interior thoughts and emotions, while the Surrealists injected color to manifest the subconscious into art. However, Warhol's use of color was more to critique and reflect the impersonal nature of a commodified culture than the expression of individual emotions or dreams.