The vibrant colors fill the enclosed area when we right-click with the fill tool.

The fill tool allows us to quickly and easily fill in a selected area with a solid color or pattern. This can be useful for creating backgrounds, coloring in shapes, or adding emphasis to certain elements in a design. By right-clicking with the fill tool, we can access additional options such as choosing the color or pattern to fill with, adjusting the opacity, or selecting a gradient fill. This can help us customize the appearance of our design and make it more visually appealing.

When using the Fill Tool in an image editing program, right-clicking within a closed area typically triggers the "Fill" command, which fills the selected region with the currently chosen color or pattern. This action effectively assigns the specified color or pattern to all pixels within the enclosed area, creating a uniform and typically solid appearance within the selected region.