To make your props like Borderlands or XIII art-style, add the following Kode to it:
WHEN DO [highlight][black]
It will look like this:
This works with glued props as well.
To highlight all objects use
WHEN DO [highlight][all objects][black]
Warning: There may be a detrimental effect on memory capacity for your game, and could cause lag if you have a lot of objects in your level all running the highlighter. Be also aware that it is not possible to get the same effect with the terrain, this will only affect props and characters.