I have always been urged to throw plants away that have color break. It is possible that the hot summer, rainy summer, chemicals sprayed while the plant was in bud...maybe even the fact that it is a plants first blooming and it hasn't got it's act together, can cause color break. There are many reasons. I segregate the plant and make absolutely sure a "color break" plant does not drip onto another plant. But a few plants I'd seriously considered destroying have turned out fine...one that remained messed up got thrown away. It is up to you in the end. Just be careful...these things are very contagious. I kept a rotting plant once and lost nearly a quarter of my collection a few years back.