I have a 2005 Buick Lesabre that has a soft top. I cannot find any other Buick Lesabre on the internet that has this feature, making it difficult to tell if it came from the factory or is after market. The soft top does have a Buick logo on it. It appears to be stained and I would like to remove it, how difficult is this going to be ? My car is White is there going to be a White Top hiding under the soft top ?