I have seen a few posts about condensation in the headlamps 
  
and Nissans's statement that it is not unusual for this to happen 
  
However, I have a slightly dirty inside to the headlamps, and what  
seems to be a slight ALgal green tinge INSIDE the main glass 
  
Anyone else had this problem? How do I go about getting the inside cleaned 
  
Is it possible without getting the oven hot and baking the lights apart? 
  
Any ideas welcome