If you're using Windows, there should be a folder in the Elex game directory with buttons and labels. I don't know where because I don't own the PC version.

Anyway, when you right click on the Elex shortcut, there should be an option in the settings to change the icon. You can set it to anything you want. Try going into the labels folder in your Elex directory, and manually saving it as one of the labels.

Also, you can google an image of the Elex shortcut button that's bigger than the one the game gave you, and save your shortcut from that image, and it should (in theory) do the same thing.

This is all an idea that I haven't tested in a while, but it worked for me back on Win XP. Good luck!
-Cym

I'm not sure what you mean by vertex based. Icons are just a set of images in a group. They fit specific sizes from 16x16 to 256x256.

The ELEX GoG icon is missing a bunch of the larger sizes for whatever reason. Here is both ELEX icons with all the resolutions available.

http://www.mediafire.com/file/3hbmtfdx1mn8dmw/ElexIconsFixed.zip/file

or

/file/3hbmtfdx1mn8dmw/ElexIconsFixed.zip/file -just add mediafiredotcom to the front.