Are there bad cheeses??

My neighbor said that her doctor put on a low carb diet for health reasons and she is only allowed white cheese. Reason was that colored cheese would stall her weight loss.

I thought that yellow/orange colored cheeses were white cheese with food color added for marketing purposes.

Are there any cheeses that are bad for low carbers (in moderation of course)?

I know this is a cheezee subject but I would like your thoughts!!