userContent.css

/*================ GLOBAL COLORS ================*/
:root {
	--accent-color: 54, 54, 54;
	--secondary-accent-color: 255, 255, 255;
	--third-accent-color: 190, 190, 190;
	--light-color: 255, 255, 255;
	--dark-color: 20, 20, 20;
	--caption-min-color: 36, 209, 49;
	--caption-max-color: 252, 185, 15;
	--caption-close-color: 250, 55, 55;

	/*================ SCROLLBAR ================*/
	scrollbar-width: thin !important;

}

/*================ DARK THEME ================*/
:root:-moz-lwtheme-brighttext,
.sidebar-panel[lwt-sidebar-brighttext],
body[lwt-sidebar-brighttext] {
	--main-bgcolor: var(--dark-color);
	--transparent-bgcolor: var(--accent-color);
}


/*================== NEW TAB BG COLOR ==================*/
@media (prefers-color-scheme: dark) {
@-moz-document url("about:newtab"), url("about:home"), url("about:blank") {
 body.activity-stream { background-color: rgba(var(--dark-color), 1) !important;}
}
}

@media (prefers-color-scheme: light) {
@-moz-document url("about:newtab"), url("about:home"), url("about:blank") {
 body.activity-stream { background-color: rgba(var(--light-color), 1) !important;}
}
}

/*================== SEARCH BAR ==================*/
#root .search-wrapper input {
	transition: all 0.3s ease !important;
    background: rgba(var(--accent-color), 0.2) var(--newtab-search-icon) 12px center no-repeat !important;
	background-size: 20px !important;
	border: 2px solid !important;
	border-color: rgba(var(--accent-color), 0.3) !important;
	box-shadow: none !important;
}
#root .search-wrapper .search-inner-wrapper:hover input,
#root .search-wrapper .search-inner-wrapper:active input,
#root .search-wrapper input:focus {
	border-color: rgba(var(--accent-color), 0.6) !important;
}

#root .search-wrapper .search-button,
#root .search-wrapper .search-button {
	transition: all 0.3s ease !important;
}
#root .search-wrapper .search-button:focus,
#root .search-wrapper .search-button:hover {
    background-color: rgba(var(--accent-color), 1) !important;
}

/*================== SEARCH BAR RESULTS ==================*/
.contentSearchSuggestionTable .contentSearchSuggestionsContainer,
.contentSearchSuggestionTable .contentSearchHeader {
    background-color: rgba(var(--accent-color), 1) !important;
}
.contentSearchSuggestionTable .contentSearchSuggestionRow.selected,
.contentSearchSuggestionTable .contentSearchOneOffItem.selected {
	background-color: rgba(var(--secondary-accent-color), 0.2) !important;
}

.contentSearchSuggestionTable .contentSearchHeader,
.contentSearchSuggestionTable .contentSearchSettingsButton,
.contentSearchSuggestionTable .contentSearchOneOffsTable {
	border-color: rgba(var(--secondary-accent-color), 0.2) !important;
}

.contentSearchSuggestionTable {
	box-shadow: none !important;
	border: 2px solid rgba(var(--secondary-accent-color), 0.2) !important;
	border-radius: 3px !important;
}