Flag for the Element of Dysprosium

Flag for the Element of Terbium

Flag for the Element of Gadolinium

Flag for the Element of Europium

It just a coincidence that the scientific flag for Europium uses the main colours of the EU flag on its field: dark blue and yellow.  Blue, or indI go is Coded to 6 while yellow is Coded to 3, which is reflective of Europium's Z number.  

Flag for the Element of Samarium

Flag for the Element of Promethium

Flag for the Element of Neodymium