On my '05 HSE there doesn't seem to be a purple tint when viewed from the inside. Viewed from outside the car and way above, the entire glass section of the roof including the two rear sunroofs, appears to have a purple hue. This is from WAY above, when I'm parked below the tower where I work and look down on it from 100 feet up. Depends on how the light is hitting it as well.
Jeff