Sure, who doesn't it? How else are you going to assess something when you have no other information?
I didn't say you had no information, but to answer your question I would say the bottling date. The style. Is it in a can or bottle? Have you had any other beers from this brewery? What trusted opinions have I heard about the beer? Does the package have a list of the malts, hop varieties or even the yeast on it?
Im not saying I can't be marketed to, but if all I know about it is that the label is duchey, geeky, or elegant, monochromatic, etc. I probably won't buy the beer at all. If it matters to you that's fine. I was merely curious.