Add Option to Disable Automatic Playlist Background

[Silun]

I use MA via docker, no HA. When I open the playlist, it'll fish a color from the cover art and set that as background. This means that the background color keeps changing like there's a sparkly unicorn vomiting rainbows all over my monitor. It is honestly really distracting. My feature request is an option to simply turn that off, and have like a solid color background or something like that instead. Any kind of control over this, really.

A workaround for the time being is the Stylus browser extension, create a rule for the MA URL and set something like this as code, in this case it will adjust the dark theme playlist background:

@-moz-document url-prefix("http://YOUR-MA-IP:PORT/"), url-prefix("https://your.ma.url/") {
    .v-card.v-theme--dark {
        background-color: #000 !important;
        background-image: none !important;
    }

    .v-card.v-theme--light {
        background-color: #8b8b8b !important;
        background-image: none !important;
    }

    .v-dialog--fullscreen * {
    color: rgb(255, 255, 255) !important;
    caret-color: rgb(255, 255, 255) !important;
    }
    
    .v-dialog--fullscreen .v-slider-track__fill {
    background-color: rgb(255, 255, 255) !important;
    }

    .v-dialog--fullscreen .v-slider-track__background {
    background-color: rgb(255, 255, 255) !important;
    }

}

Edit: Updated the CSS code to work better.

[mattbruman]

I second this, I want a uniform experience and sometimes the backgrounds can be too bright and distracting.,