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This study aimed at analyzing the colors of the American Language Course textbook (ALC) at Prince Faisal Technical College in order to investigate if these colors agree with Goethe's Theory of Colors. The descriptive quantitative design is used to evaluate the colors in the ALC textbook. To achieve the purpose of the study, all the pictures in the ALC textbook were analyzed and categorized into three groups. The results showed that 55.7% of the colors were found in the tertiary color group as the first rank. The secondary color group gained the second rank with 47.6%, whereas the primary colors gained the third rank with 41.6%.