That's quite normal autumnal colouring - gorgeous faded shades of mauves and sometimes creams and blue/greens too. Nothing for you to do at this time of year. The faded flower heads provide winter interest and protect next years buds that form below them. Deadheading and any pruning should be done when buds start to swell in the spring.
“I am not lost, for I know where I am. But however, where I am may be lost.” Winnie the Pooh
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That's quite normal autumnal colouring - gorgeous faded shades of mauves and sometimes creams and blue/greens too. Nothing for you to do at this time of year. The faded flower heads provide winter interest and protect next years buds that form below them. Deadheading and any pruning should be done when buds start to swell in the spring.