Safari Extension badge icon

Hello community!

I am currently working on a Safari extension and have noticed a distinctive behavior with the badge icon in the Bitwarden extension, where it does not appear to be tinted into the system accent color.

I am keen to replicate this behavior in my Safari extension, and I was wondering if you could provide insights or guidance on how this is achieved in the Bitwarden extension.

Thank you in advance for your time and assistance.

Best regards,
Konrad