I tried to use the composer icon but it does hardly fit into the icon theme. It's difficult to use such an icon with so many details. That's because the icons have a very small size in the explorer of VS Code. So it is always better to have simple and clean icons.

Let's see, maybe I'll find a possible solution for this icon but I'm currently not sure about it.

What about this svg image from file-icons?
There's only a silhouette there, without any details.

So using that icon with a color like #f28d1a* could work?

* This color is used on official composer repository packagist.com

@azdanov No, I don't like the image from file-icons. It's clean and simple, but not very nice. Then I'd rather use the original composer icon. But let's see 😃

I tried again to insert the icon into the theme. Unfortunately I don't like it at all, so there will be no icon for composer at the moment. It just doesn't fit to the other icons. I'm sorry about that.

I tried to find a way to have a composer icon.
(It isn't finish yet, but I wanted to know if you may find it a good Idea or if you are definitively not gonna have any composer icon)

The problem is that the Composer icon has very detailed small outlines which are difficult to recognize as an icon in the file explorer. I also think that the file composer.json already has a good icon with the JSON icon and that there is not much need for an own icon. Of course I know that the recognition for Composer with its own icon would be better, but we still have to find a suitable icon. I'll open the issue again to keep track of it 😉

I tried a better vectorization of it.
It's true that it's not very recognizable in small size.

Maybe it's with a detached element?

The problem is that the Composer icon has very detailed small outlines which are difficult to recognize as an icon in the file explorer. I also think that the file composer.json already has a good icon with the JSON icon and that there is not much need for an own icon. Of course I know that the recognition for Composer with its own icon would be better, but we still have to find a suitable icon. I'll open the issue again to keep track of it 😉

Here I come to encourage you so that you do not give up on adding the Composer icon. I tried switching to VSCode Icons, which does have it, but the Material Icons set is truly unbeatable. Please consider adding the Composer icon so that our happiness can be complete. When I see that .json icon, it makes Composer files look like just another .json file! I believe that without that icon, our experience cannot be fully enriched. But what a joy it would be if you manage to add it! 😆 Plllllsssss