Black Powerflex bushes?

[Californication]

Hello!

How are the black Powerflex bushes?
I’m in Belgium and our dear Contrôle Technique (MOT) do not allow bushings that don’t look stock. So no fun colors! Apparently the black ones pass just fine. Are the black ones bearable? Or even comfortable ? It seems they are quite stiffer.
I’d be doing front and rear arms.

Thanks!

 

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I highly rate Powerflex, I had a full set of adjustable front and rear. They are quick to respond on email, ping them a message to confirm.