When we are children our parents always say not to buy something only for it's colors or if is pretty because the taste could be bad. But... as artists, creatives(and consumers) our purpose is to see beautiful things, create things that attract the eyes and we search things that can attract us as well. So it actually works for us, but of course it's implied that good quality is needed.What is the best way to explain it than PACKAGING?! A great site of new ideas around packaging and graphic design is The Dieline.
See it for yourselves