Adding lights to game objects in the Tower Defense tutorial project.

Hi there!

So, I've just started playing around with Unity and I thought it would be cool if the towers in the Tower Defense tutorial project would light up, maybe also give some lights to the particles they're shooting at the enemies.

I've tried adding lights to the prefab objects, but couldn't see any results.
Surely, I'm doing this wrong

Any help would be much appreciated!
Cheers

 

If you can please send some screens so me or someone else can look into it . It's hard to guess at least for me what the issue may be.