Possible Clues:

• Taken alone
• Bluish-grey, essentially
• Essentially a greyish-blue colour
• Latin for “in itself”
• Dark blue, essentially
• Latin for "in itself"
• Essentially, the other Alexandre Dumas overshadowed son
• Old hero with no room for America essentially
• In itself, in Latin
• Latin phrase that means 'exactly' but you only use it when you're saying 'not exactly'