Single page project done for: https://www.freecodecamp.org/learn/coding-interview-prep/take-home-projects/build-a-light-bright-app. Main points of the project:

• You can click circle to: 1) Give circle color 2) Change existing circle color.
• You can double click circle to remove existing color.
• You can click and then drag to color circles instead of clicking them individually.
• You can reset color of all circles.
• You can reset color on the last circle.