I've been using these over 20 years. They are the best for organizing file folders. At a glance I can see what folder it is and where it goes without reading the label. For example; I use blue for my personal binder cook books and recipe folders. I only wish I could get them in more colors.
We need more colors in our lives, so I have fun with these labels. But, I wish they were available in black and another set of different colors/shades.