Big Sur icon proposal

With macOS Big Sur, Apple updated their icon guidelines and started transitioning to this style of "squircle" icons:

It would be cool if Tiled conformed to the guideline for its macOS icon. I'd like to make a pull request to change the app icon and document icons (should be a matter of changing an .ico, making an Assets.car and changing some Info.plist entries), but first, let's discuss app icon ideas.

The easy way out is to put the existing icon in a white-ish box and call it a day, but I also tried something with a blue background (which I'm not completely happy about because it turned out a bit low-contrast). Let me know what you think or if you have a better idea to try out. I'm not a exactly a designer, so feedback from people with more XP than me would be appreciated.