[Help needed] Problems in changing underlying TableViewCell label

Thanks for this wonderful project first - seems to make life much easier!

I'd like to color the labels of QuickTableViewController's rows, but can't get it to work.

Though I'm able applying a general style in AppDelegate with...

  let tableViewCellLabelAppearance = UILabel.appearance(whenContainedInInstancesOf: [UITableViewCell.self])
  tableViewCellLabelAppearance.textColor = Theme.textColor

...all other labels in all other TableViewCells get colored accordingly, except of those from QuickTableViewController.

My naive approach to get this working was...

  let optionRowLabelAppearance = UILabel.appearance(whenContainedInInstancesOf: [OptionRow.self])
  optionRowLabelAppearance.textColor = Theme.textColor

...but this was refused with the compiler error message:

Cannot convert value of type 'OptionRow<UITableViewCell'>.Type to expected element type 'UIAppearanceContainerType'

Wondering now what the preferred way is theming QuickTableViewController views?

Thanks and best wishes,

Karsten