Resizing of a LIVE PAINT object with script, problem with stroke width.

Hi,
I have a function for grouping and scaling up visible objects, for exporting in higher resolution then I work on. It works fine with everything except live paint objects which I have to rely on. The object is scaled but the stroke width remains the same. 

Here is the part of the function:

var factor = 600;
    selected.resize(factor, factor, true, true, true, true, factor);

 Any one has an idea of how I can solve this? 

Maybe find the live paint object within the group and adjust the stroke? The probelm is that there is nothing in the api about the live paint...