did you even look at 'bronze pagoda' link?
it is not sun-bleached. it is just light-colored 'water-color' margin. i saw beckwith's gem today grown in shadier position - it has green spots and yellow margin is nowhere as wide as mine (just like i saw in other pics). mine has no green at all. but it must be smth readily available - it's in a very large bed around 'village style open mall area'. that is part shaded in PA - so the sun is not as strong as you might believe it to be, lets say, in georgia or carolinas.