Create if necessary a new catalog entry in exactly the hierarchy you like to arrage it in the catalog. Upload in this entry only the pictures of the new labels with the help of the known "Add Bananalabel" button. Then go to the Catalog»Review Menu where the labels are listed with editable fields in a table. With copy and paste you can change all labels of your catalog entry field by field (text, color, country, size, PLU, shape, ...) very quick.
You will need the user role "collector" to see this menu entry: