Apple Music doesn't have a desktop app on Linux, but you can use it as a web app via Mint's webapp manager or another similar tool.
For best results with this color scheme, I install a userstyle manager like Stylus in the Apple Music webapp's Chromium profile and use the following style to add a border above the player bar and make the navigation menu a consistent background when the window is narrow:
@-moz-document domain("music.apple.com") {
.player-bar {border-top: 1px solid #D3D3D3}
.navigation {--mobileNavigationBG: #F9F9F9}
}The screenshot below has this custom CSS applied.
