Calla Lilly Zantedeschia with flower pattern mirrored on the leaves

Is it normal for a Calla Lilly to bloom, and the leaf, instead of being green, one leaf had a splash of yellow, complete with brown stamen - on the leaf - ie the same flower pattern on the leaf. If this is a rare occurrance, is it worth anything to plant breeders?
Peter (Canberra, Australia)
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