'Creamsicle' Nasturtium, Mounding

When I planted my 'Spitfire' nasturtiums one plant produced a bloom that was quite different from the orange-red colored flowers of 'Spitfire.' The first bloom was very yellow which made me think it was 'Peach Melba,' but subsequent blooms have looked much different than that first one. The yellow color has turned out to be more pink and and the orange blush is more visible.