const CRGB BinaryClock::hourColorsP[][NUM_HOUR_LEDS] PROGMEM = 
         {
         // onHourAmP colors (index 0): Hours AM (LEDS 12 - 16)
         { CRGB::DeepSkyBlue, CRGB::DeepSkyBlue, CRGB::DeepSkyBlue, CRGB::DeepSkyBlue, CRGB::DeepSkyBlue }, 
         // onHourP colors (index 0): Hours PM and 24 (LEDS 12 - 16)
         { CRGB::Blue,        CRGB::Blue,        CRGB::Blue,        CRGB::Blue,        CRGB::Blue }
         };    

      /// @brief A 2D array for colors for just the hours. The `OnHourAM` is the alternative colors used 
      ///        for the AM hour LEDs when `AmColor` is Black. This is to show the clock is in 12 hour
      ///        mode when there is no AM indicator. The `OnHour` is the standard hour colors generally used.
      /// @details The `OnColor` hour section is replaced with either the `OnHourAM` or `OnHour` colors
      ///          when the time switches from AM to PM and the flag `isAmBlack` is `true`.
      /// @remarks When the AM indicator color is Black, there is no way to differentiate between 12 noon in 
      ///          24 hour mode and 12 midnight in 12 hour mode. To remove this ambiguity, the AM hours are shown
      ///          in a different color, e.g. DeepSkyBlue.
      /// @par     OnHourAM:
      ///          Index 0 - `OnHourAM`
      /// @par     OnHour:
      ///          Index 1 - `OnHour`
      static const CRGB hourColorsP[][NUM_HOUR_LEDS] PROGMEM;