To clarify what exactly the feed header is, refer to the illustration below:
These are the settings for the header of each feed item.
Font – Choose a font and size of font for each of the feed item headers. You can also change the settings for bold, italics and underline.
Color – This is the default color for the item header.
Hover Color – This is the color that the item header will display when someone hovers their mouse over it.
Visited Color – This is the color that the item header will display if someone has previously clicked on that link.