Fencing used to mean one trip to a hardware store and one option, basically a wall of identical pressure treated boards that went silver gray within a year whether you wanted it to or not. That has loosened up a lot. There's more range now in panel styles, trellis tops, and finishes that actually hold their color, and for the most part that shift has been a good one, even if it means standing in an aisle for twenty minutes trying to figure out what you actually want.
Where it gets tricky is right at the boundary between your yard and your neighbor's. A fence or trellis that looks great alone can look strange against whatever is already there, a different style, a different height, a different wood tone weathered a different way. Before you commit to anything, walk the line and look at what it's going to sit next to, not just what it's going to sit in front of. A crisp white trellis next to a leaning, graying privacy fence reads less like a design choice and more like an argument nobody won.
There are honest limits here too. Trellis panels are not a privacy solution, they're a support structure with gaps built in on purpose, so if what you actually need is to block a sightline, you're shopping the wrong category and you'll figure that out about two weeks after installation, standing in your yard, fully visible. And thinner fencing that looks solid in a listing photo can turn out to flex under real wind the first time a storm comes through, so give any panel a firm push with your hand before you buy it, not after it's in the ground.
On color and finish, the ones that age well are the ones that don't pretend. A natural wood tone or a muted stain that's meant to weather is far easier to live with long term than a bright painted finish that will chip and need redoing, usually right before you have people over. Untreated cedar going silver is a look. A white panel going patchy is just upkeep you didn't sign up for.
In an ordinary yard, fencing and trellis sit best with plants doing a little more of the work than the structure itself, climbing vines, a raised bed nearby, something softening the lines. It's a backdrop, not the main event. What it can't do, no matter how nice it looks, is replace a wall when privacy is actually the point.