Final answer:
In the context of painting a room, 'hue' refers to the pure spectrum colors or the base colors on the color wheel used for expressing ideas and inspiring emotions in art.
Step-by-step explanation:
The term 'hue' in the context of Brady painting his room and choosing a color refers to the pure spectrum colors which people most commonly refer to as 'color'. Hues are the basic colors on the color wheel, which include the three primary colors (red, blue, yellow), the three secondary colors (green, orange, purple) that are created by mixing the primary colors, and the six tertiary colors made from primary and secondary colors. When artists like Diego Alfaro Siqueiros and Henri Matisse select hues, they are picking from these pure colors to inspire feelings in the viewer. Hues are distinct from value, which is altered when white or black is added to a hue to create tints or shades, respectively, and from saturation, which describes how bright or dull a color is. For example, when Gauguin describes the use of shades of purple and yellow, he is referring to the manipulation of hues with specific values to evoke a certain atmosphere within the painting.