The phrasal verb "color in" is predominantly used in informal contexts, particularly in conversation related to art, crafts, and activities involving children. It is frequently utilized to describe the act of filling a drawing or outline with color, often using crayons, markers, or pencils. This term is chiefly common in environments such as classrooms, art assignments, or among parents and children engaging in coloring activities. While "color in" is rarely found in formal speech or writing, it can appear in more casual contexts or publications dealing with educational or recreational content for young audiences. The simplicity and specificity of this phrasal verb make it especially useful for conveying the idea of adding color in a clear and straightforward manner.
B1
PreIntermediate
1. To apply color to the inside of a shape or outline using drawing tools such as crayons or markers.
The children were asked to color in the pictures of animals in their coloring books.
She likes to color in the designs in her sketchbook during her free time.
2. To figuratively add details or make something more vivid by embellishing or filling out.
The author colored in his narrative with rich descriptions and vivid imagery.
In her storytelling, she would always color in the facts to make them more interesting.