So I was in my local beer and wine store today, and saw that they had Widmer Raspberry RIS on the shelves. Went to grab one, and it was colder than it should have been for sitting out on the shelves. Checked the other bottles, and realized that these had been in the cooler, and were now being shifted out onto the shelves and allowed to get warm. I noticed the same with some bottles of La Folie, and a few other things on their shelves. I've always been told that its bad to let beer get warm once its been cold, but maybe this is just one of those things we're told that isnt true. Is this bad, and should I be wary of buying beer off their shelves, or is it OK to let cold beer get warm like this?