Generations was such a strange sight with those different uniforms. I've watched the film hundreds of times and it still bugs me! I work at a large supermarket, and when we had new uniforms we had signs up for a few weeks telling us of the date of change. I can understand one or two coming to work in the wrong uniform, because that's always going to happen. In GEN it just looked like they wore what they felt like that day.
Obviously it was Casual Friday.