Book bins make any classroom library neater and cuter. Once you have the right labels, you need the right book bins. If you have a specific color scheme for your classroom theme, you should go with a muted tone like black or white.
Or get all of your bins in only one or two colors that go with your theme.
On the other hand, if your theme is all about bold rainbow colors, them you can have a bright mix of colors for your bins.
See all of my library labels here.