Solarize Fox von happysurf

PREVIEW: https://i.imgur.com/o2oEZVx.png

SUGGESTED USERCHROME CODES:

/* Border around the active tab */
.tab-background[selected="true"] {
border: 2px solid #497186 !important;
border-radius: 5px !important;
}

/* Background for dark site favicon icon */
.tab-icon-image:not([selected="true"]) {
background-color: slategray !important;
border-radius: 15%;
padding: 1px;
transform: scale(1.20);
}