Possible Clues:

• How brutal that he keeps account of nine more.
• Element 27; a deep blue
• A fellow graduate left at last till all is blue
• Magnetic-alloy element; a blue
• Sounds a little hoarse around the graduate till all is blue
• A junior officer on horse is in one's element
• Metal giving its name to type of deep blue
• A deep blue colour
• Metal element
• Blue cheese, or Brie and Leicester to form starters