Need help with lights please.

[water95]

So i'm making a level on the era tileset and I want to add lights to it but I have no idea how. I've asked a bunch of people and all they say is it's an NPC but I don't know what that means. So here is what I do. From my level editor I click Predefined NPCs. I then click on light and set all the numbers to Red:54, Green:31, Blue: 1, and alpha was automatically set to .99. Is their something i'm suppose to add to it and not just click lights. Please, I really need help.