Highlights comes with some special power tools for academics. The PDF underline tool for reference lookups is a super fast and easy way to get to the source of a reference without touching the keyboard.
How do I enable it?
Go to Preferences –> PDF –> Underlining power tools and select a color for your reference lookups:
This color should be a color you do not use for other types of annotations as it will no longer be extracted along aside your regular annotations.