Exactly the same for me,two months old car,running with lights on and 4 hours in a hot Aussie sun and still fogged up. Pink
Do you mean the fog is pink? I have heard of the "red mist" but a pink fog must be the girlie version

Seriously if the mist is pink it can not be normal condensation of humid air inside the instrument. Perhaps it is caused by some lubricating oil or other fluid escaping inside the instrument. That would definitely be a fault.