Outline
Add an outline on all objects of the layer having the effect. This won't work well if shown on top of the background color of the scene. Be sure to use an object acting as a background or a floor.

Parameters
- Thickness sets how wide the outline is, in pixels.
- Color of the outline sets its color.
Tip
To keep the outline from being clipped at the edges of the object, increase the Padding so the effect has room to draw around the image.
Reference
All effects are listed in the effects reference page.