[johnalfa]

Buy this. You won’t regret it. And you’ll suddenly remember those dark plastic pieces actually have flecks of sparkles in them. Plus, ceramic coating keeps it looking new for a good while.

Cerakote Ceramic Trim Coat Kit - Quick Plastic Trim Restorer - Guaranteed Restoration to Last Over 200 Washes – A Ceramic Coating, Not a Dressing Amazon.com

Edit: works on aging rubber pieces around the windows too that turn gray with time.

I used Griots ceramic trim wipes on the faded plastic trim of my Honda CRV. That was over a year ago; the trim is still black and shiny. Griots product ia made by Cerakote but more expensive. Now that I've tested product I'm going to buy that Amazon kit for the Giulia. I've tried all those liquids like 303 and Back to Black and they just don't last.