Assigning colors with the Shape Builder tool has two options: picking a color from swatches panel or from the artwork. This article shows how to setup choosing a color from swatches panel or artwork.
Using the shape builder tool with color swatches panel
Swatches panel is the default option to pick a color for shape builder tool. You can select any color from swatches panel and use it directly with the shape builder tool.
1. Hit CTRL + A keys to select your objects ( Shape builder tool produce results only for the selected objects)
2. Click shape builder tool in the toolbox
3. Pick any color/texture from the swatches panel and drag your Mouse in your drawings and create your shape with the color you select. If you don’t know how to use the shape builder tool please watch these videos.
Using the shape builder tool with artwork color
In order to use the shape builder tool with artwork color, double-click shape builder icon in the toolbox. And then you can select the color picking method from “pick color” option. As you may notice, there are only two options: color swatches and artworks. Select pick color from “artworks” and hit ok.
In this method, the color is determined by where you start the drag. The below gif animation shows usage of this method. In such drawings, it is a very easy way of combining objects with colors.
Shape builder tool usage animated Gif
I hope this helps