diff --git a/chrome/userChrome.css b/chrome/userChrome.css
index b42df99..3607e18 100644
--- a/chrome/userChrome.css
+++ b/chrome/userChrome.css
@@ -29,10 +29,11 @@ menupopup:not(.in-menulist) > menuitem, menupopup:not(.in-menulist) > menu { pad
 #nav-bar { border-top: none !important; }
 
 /* change active tab */
-.tab-background:is([selected], [multiselected]) { border: 1px solid grey; border-bottom: none !important; background-image: none !important; }
+.tab-background:is([selected], [multiselected]) { border: 1px solid grey; border-bottom: none !important; background-image: none !important; outline: none !important; }
 
-/* analogous to the above, change inactive tab to a grey-to-white gradient */
-.tab-background:not([selected], [multiselected]) { background-color: #eee; }
+/* analogous to the above, change inactive tab to grey */
+[brighttext="false"] .tab-background:not([selected], [multiselected]) { background-color: #eee; }
+[brighttext="true"] .tab-background:not([selected], [multiselected]) { background-color: #333; }
 
 /* Container color bar visibility */
 .tabbrowser-tab[usercontextid] > .tab-stack > .tab-background > .tab-context-line { margin: 0 max(calc(var(--user-tab-rounding) - 3px), 0px) !important; }