I think I saw one somewhere that was something like this:
Attack Panache [General]
Requirements: Cha 13+
Benefit: Your confidence and panache allow you to use your Cha modifier in place of your Str modifier for melee damage rolls. This may be used with any finessable weapon, and this may not be combined with similar abilities, such as Weapon Finesse.
I want to say a PDF called Roguish Luck, or something similar. Hope this helps!