Not sure why the jsfiddle wouldn't work - do you have any more specifics about what goes wrong? Any errors? I'm assuming you changed the token, troop id, and scout id to your own.
Since you got the temperature values working, could you just modify that code to do something with the led reports instead? The color of the led is reported automatically, just like the temperature, so the same code should apply, you would just be looking for an
led report instead of a
Make sense? Post some code and I'll try to help figure it out.