The term '联考水粉色彩图片' refers to color paintings created using watercolor techniques, specifically for the purpose of examinations or assessments. In China, '联考' usually denotes a joint or comprehensive examination, often related to art education or entrance exams. Watercolor is a popular medium in art education due to its versatility and ease of use. These images often showcase the skill and creativity of the artist, and are used for evaluation purposes.