Theres similar settings for paths, navigation, and avoidance
Alt text: Hovering over the Visible Collision Shapes setting in the editor and a tooltip showing with “When this option is enabled, collision shapes and raycast nodes (for 2D and 3D) will be visible in the running project”
I actually built a whole game only with collision shapes. You can change the colors and use complex polygons. Makes prototyping much nicer.