Apply shadows to Shapes and lines by clicking the target object, then clicking the “Shadow” tool from the menu and shadow style menu will prompt.

1. Show

To hide or unhide the shadow on the objects.

2. Opacity and Blur

You can adjust the transparency and adjust the blur effect on the shadow. 

3. Background

Cacoo usually automatically applies shadow to every individual object. If you have layered a few objects over each other and want to apply shadow to only the background, you can check the "Background". The Shadow will only appear over the background and not any of the layered shapes. 

  

4. Fill (Color selection)

You can select basic color here.

5. Custom Color

To create a custom color, go to "SHOW MORE" and it allows you to adjust the color or input color code to match the element you want.