Silver or nickel hooks are popular for baits such as bread, especially in punched form, where most of the hook is hidden inside the pellet of bread anyway.
Some anglers like this colour for hemp fishing, too, because the white shoots of the seed combat any brightness. On the downside, nickel hooks stand out alarmingly if you want to switch to using tares on the hook, a dark bait that only needs to be nicked lightly, leaving most of the hook visible.
I’m not over keen on silver hooks, but I will use them when I want to create an attracting glint with baits such as worm and caster when fishing for perch. This works well when inducing movement into the bait, by twitching it along the bottom, or continuously lifting the tackle and letting it fall through the water column.
The only other baits that
I’ll consider using with silver hooks are white squatts and pinkies, bearing in mind that the size of hook is going to be a very small 20 or 22.