I think it's a very personal opinion, as are most wheels.
I love my gloss black pescaras on my silver car, but in saying its a personal opinion, I don't like what Robin has done to his Monza's as I think it takes the edge away from them and makes them look cheaper than they are in reality.
....For me, your black Pescara's would be transformed if they had a silver rim and would particularly suit the car being silver. (Like Hurdy's?)
Do you remember what my stock Monza's were like with white worm? Here's a reminder : -
I let my white worm go for longer than anyone else here has and so mine was a good example for others to see how the dreaded worm progresses. What was I to do? Refurb every year or so while bearing the scars until it was extensive enough to do? Refurb as soon as any white worm started to appear? Change to a different wheel? - No, I like the Monza's far too much and they are very easy to clean - I don't like to spend half my life cleaning and detailing - What's the point? This is England not California.
My solution was to retain the Monza as it is one of the defining elements of the Mk5 GTI - Just as the Pescara is to the Ed30 - You painted yours, I painted mine - It is as you say a choice of personal taste.
As Dolly Parton once said : -
"It costs a lot of money to look this cheap!"