color inside the lines

To think or act in accordance with set rules. Likened to the way a child is encouraged to neatly color within the lines of a coloring book. That poor girl is so rigid. I think she's only capable of following rules and coloring inside the lines. The company was so strict with its writers. You were never allowed any kind of creative freedom, always being told to color inside the lines. So what if I color inside the lines? Not everyone needs to be a rebel like you, Jenn.