The icon looks good.
The icon looks bad. It is "forced" in a grey circle and it doesn't completely fit.

This should be fixed from AC in https://github.com/mozilla-mobile/android-components/pull/5827 to make it conform with the designs.
Hi, verified as fixed on the latest Nightly #20380605 from 2/7 using the following devices:
• Google Pixel 3a XL (Android 10)
• Google Pixel 3a (Android 9)
• Huawei Mate 20 Lite (Android 8.1.0)
• Samsung Galaxy S7 (Android 7.0.0)
• OnePlus A3 (Android 6.0.1)
• LG Nexus 4 (Android 5.1.1)
@gabrielluong - Just a QQ, do you know why the shape of the icon is different from one device to another?
For E.g. on the Pixel devices the icon is round whereas on the other devices it looks "diamond shaped".
► Screenshot from Google Pixel 3a (Android 9)

► Screenshot from OnePlus A3 (Android 6.0.1)

Most helpful comment
This should be fixed from AC in https://github.com/mozilla-mobile/android-components/pull/5827 to make it conform with the designs.