Light sources on different layers behave differently. Do some experimentation. To give control of a token the provides light to all players, just make a dummy character sheet, called "Lighting" or "Common Objects" or something. Give control of that character to all players, but don't put it in their journals. Now, whenever you want them to control an object on the play area, just assign the token to that character sheet. Any number of tokens can look to one character sheet, you only need one. They can pick it up or move it anywhere. If you want them to be able to control lighting on that object, that's your prerogative as GM and entirely dependent on your play style. If you do, simply create a token action on the dummy character that calls your lighting script. They can then use your lighting script on that token without causing havoc around the map. If you were concerned about them using the lighting elsewhere (say, clicking to bring up the chat menu, then selecting a different object to giv eit lighting you don't want), you could create a version of the lighting macro that would only affect tokens controlled by a character. At least I think that's possible. Aaron, the creator of Token-mod would know best. Bonus tip: If you create a rollable table token, where each face is a different common light source, you can use token mod to create a series of commands that would say, change the face to a torch and apply torch lighting in one click. Or a candle, or a campfire, etc.
