     func createKeyboardRows() -> [[String]]{
         var rows: [[String]] = []
         rows.append(createUpperAlphabetRow())
+        rowColors.append(UIColor.purple)
         rows.append(createLowerAlphabetRow())
+        rowColors.append(UIColor.brown)
         rows.append(createNumberRow())
+        rowColors.append(UIColor.orange)
         rows.append(createPunctuationRow())
+        rowColors.append(UIColor.gray)
         rows.append(createSymbolRow())
+        rowColors.append(UIColor.darkGray)
         return rows
     }
     


    func updateSelectionDisplay() {
        selectionDisplay.text = keyboardRows[selectedRowIndex][selectedCharIndex]
    }
}

    var selectedRowIndex: Int = 0
    var selectedCharIndex: Int = 0
    var selectionDisplay: UILabel!
    var rowColors: [UIColor] = []
    
    /*
     * Class utility functions.
