To Reproduce
Using dark mode, select an entry, then select Item --> Copy Password

Expected behavior
The icon in the notification message is visible

Actual behavior
The icon in the notification message is black-on-black and cannot be seen

Screenshots

Desktop (please complete the following information):

• macOS: 10.15

NOTE
This problem does not just affect the copy password notification message, it affects all notification messages involving an icon. Copy password is described as an example.