The colour olive provided the starting point for 'Olive Branch', but the title came to mind as I worked on it, influencing the decisions I made from then on.
High on the stern Aeneas his stand,
And held a branch of olive in his hand,
While thus he spoke: "The Phrygians' arms you see,
Expelled from Troy, provoked in Italy
By Latian foes, with war unjustly made;
At first affianced, and at last betrayed.
This message bear: The Trojans and their chief
Bring holy peace, and beg the king's relief." (https://en.wikipedia.org/wiki/Olive_branch)
And held a branch of olive in his hand,
While thus he spoke: "The Phrygians' arms you see,
Expelled from Troy, provoked in Italy
By Latian foes, with war unjustly made;
At first affianced, and at last betrayed.
This message bear: The Trojans and their chief
Bring holy peace, and beg the king's relief." (https://en.wikipedia.org/wiki/Olive_branch)