[Enhancement]: Modify the "Missing" icon to be clearer as it can blend in against red-colored book covers

[ZLoth]

Type of Enhancement

Web Interface/Frontend

Describe the Feature/Enhancement

Additional graphical enhancement to better bring out the missing book icon.

Why would this be helpful?

While the "missing" icon is well designed, it can blend in against red-colored book covers. A slight enhancement to the image like changing the white exclamation point to yellow and/or adding a distinctive white/black border will help in the User Experience.

Future Implementation (Screenshot)

Idea 1:

Idea 2:

Idea 3:

Audiobookshelf Server Version

2.17.7

Current Implementation (Screenshot)