I think the Volt looks good for what it is, which is a practical compact commuter car. Of course it's not going to turn heads like a Mustang GT or Challenger. I think people also tend to like it, thinking that it looks good "for a Chevy." I think it looks a little nicer than a Cruze with more aggressive angles and body lines and the Chrome grille pieces that I prefer to the Cruze. To me it's more attractive than most others in the compact sedan class. It's sleek like the Civic but without some of the boy-racer faux aggressive accent and fake plastic vents and such. It's definitely more attractive than a Corolla (though the new Corolla hatch looks okay, we'll see how it translates to a sedan). It looks cleaner than the Cruze, Elantra, outgoing Forte, Focus, and many others. I do like the Mazda3's looks, but I think the Volt is at least as nice-looking, maybe a bit better.
Compared to the other "class" of vehicles it's in, the "eco-conscious", sub 40K group, it's no contest. The Volt is hands down sleeker and more attractive than any variant of the Prius, Clarity, or Bolt. While I have no beef with either the Ioniq or the Niro, they're just kind of bland and round in styling. I have to say I do like the looks of the new Insight from what I've seen online.
My favorite reaction to it was my grandfather's. He's a former American Motors/Chrysler employee and kept jesting me about my "Chevy Amp thing" until he saw it in person and really got to understand how the powertrain works. After years of driving Chrysler 300s, he said "that's a really sharp car" and said he could see the convenience of it for everyday travel.
Mine's black, which (when clean), really looks nice in the sun.
I really have no idea why they killed Kinetic Blue for 2019.