Feature request: Cell selection text highlight color

Hey there,

There's a property inside the theme plist called "Cell selection color". It would be great if there could be something like "Cell selection text highlight color", which would change the color of the label to the defined color when the user selects a cell.

Here's a link to the relevant documentation: `https://developer.apple.com/library/ios/documentation/UIKit/Reference/UILabel_Class/#//apple_ref/occ/instp/UILabel/highlightedTextColor`

Thanks