Semi-transparent background on favicons

[Hadden89]

By default, the background on favicon is quite solid - which is not very nice - and only for the active tab - so, some favicons could still become invisible, especially on dark themes.
With this, the background - slightly faded - should be preserved for background tabs too.
I did it for myself, I leave here in case someone is interested

.tab-position .tab.active .tab-header .favicon,
.tab-position .tab .tab-header .favicon {
  background-color: rgba(255, 255, 255, 0.65);
}

This could be used for webpanels favicon too (they haven't a background at all)

.webviewbtn img {
    background-color:rgba(255, 255, 255, .5) !important;
}

[Hadden89]

A related mod I use for the urlbar dropdown (but solid color, this time).

• Reduce opacity for labels (text is "more white")
• Background for favicons (icons should be more visible)
• Is better with "squircle favicons" (reason of the border-radius)

.OmniDropdown-Label {opacity: .8;} 
.OmniLinkItem-Favicon {background-color: var(--colorFg); border-radius: 4px;}