What a fantastic plug-in! Well done!
Firstly, I don't do code so please be gentle. I want to change the background colour behind the map (currently #333333). Do I do this through my wordpress css file, or does leaflet.css override my page template?
Secondly, I want to make the map wider, so that it fills the screen or at least centres on the middle of the screen. How do I do this?
Finally, intrying to find a solution to this problem (I've certainly been digging!) I found the following vulnerability in your code. I don't know if it helps, but you need to go to: http://1337day.com/exploits/18944
I will vote :)