setTextColor(_:range:)
Sets the text color of characters within the specified range to the specified color.
Declaration
func setTextColor(_ color: NSColor?, range: NSRange)Discussion
Removes the text color attribute if color is nil. This method applies only to rich text objects.
This method does not include undo support by default. Clients must invoke shouldChangeText(inRanges:replacementStrings:) or shouldChangeText(in:replacementString:) to include this method in an undoable action.