diff --git a/searx/static/themes/oscar/css/logicodev-dark.min.css.map b/searx/static/themes/oscar/css/logicodev-dark.min.css.map
index 32293f3a4..d44618ef9 100644
Binary files a/searx/static/themes/oscar/css/logicodev-dark.min.css.map and b/searx/static/themes/oscar/css/logicodev-dark.min.css.map differ
diff --git a/searx/static/themes/oscar/css/logicodev.min.css.map b/searx/static/themes/oscar/css/logicodev.min.css.map
index c28e2c7b3..7cec798b3 100644
Binary files a/searx/static/themes/oscar/css/logicodev.min.css.map and b/searx/static/themes/oscar/css/logicodev.min.css.map differ
diff --git a/searx/static/themes/simple/css/searxng-rtl.css b/searx/static/themes/simple/css/searxng-rtl.css
index 3abd096ce..ef7de6dda 100644
--- a/searx/static/themes/simple/css/searxng-rtl.css
+++ b/searx/static/themes/simple/css/searxng-rtl.css
@@ -831,6 +831,7 @@ template {
   --color-footer-border: #ddd;
   --color-sidebar-border: #ddd;
   --color-sidebar-font: #000;
+  --color-backtotop-font: #444;
   --color-backtotop-border: #ddd;
   --color-backtotop-background: #fff;
   --color-backtotop-shadow: #ccc;
@@ -876,7 +877,7 @@ template {
   --color-result-detail-font: #fff;
   --color-result-detail-label-font: lightgray;
   --color-result-detail-background: #000;
-  --color-result-detail-hr: #333;
+  --color-result-detail-hr: #555;
   --color-result-detail-link: #8af;
   --color-result-detail-loader-border: rgba(255, 255, 255, 0.2);
   --color-result-detail-loader-borderleft: rgba(0, 0, 0, 0);
@@ -889,6 +890,7 @@ template {
   --color-toolkit-tabs-label-border: #fff;
   --color-toolkit-tabs-section-border: #ddd;
   --color-toolkit-select-border: #ddd;
+  --color-toolkit-select-border-hover: #bbb;
   --color-toolkit-checkbox-onoff-background: #ddd;
   --color-toolkit-checkbox-onoff-label-shadow: rgba(0, 0, 0, 0.3);
   --color-toolkit-checkbox-onoff-label-background: #3050ff;
@@ -913,14 +915,15 @@ template {
     --color-header-border: #333;
     --color-footer-background: #181818;
     --color-footer-border: #333;
-    --color-sidebar-border: #333;
+    --color-sidebar-border: #555;
     --color-sidebar-font: #fff;
+    --color-backtotop-font: #bbb;
     --color-backtotop-border: #333;
     --color-backtotop-background: #181818;
-    --color-backtotop-shadow: #444;
+    --color-backtotop-shadow: #333;
     --color-btn-background: #58f;
-    --color-btn-font: #fff;
-    --color-search-border: #444;
+    --color-btn-font: #222;
+    --color-search-border: #555;
     --color-search-background: #222;
     --color-search-font: #fff;
     --color-search-background-hover: #58f;
@@ -933,13 +936,13 @@ template {
     --color-categories-item-selected-font: #58f;
     --color-categories-item-border-selected: #58f;
     --color-autocomplete-font: #fff;
-    --color-autocomplete-border: #444;
+    --color-autocomplete-border: #555;
     --color-autocomplete-background: #222;
     --color-autocomplete-background-hover: #181818;
     --color-answer-border: #333;
     --color-answer-font: #bbb;
     --color-answer-background: #181818;
-    --color-result-shadow: #444;
+    --color-result-shadow: #333;
     --color-result-border: #333;
     --color-result-url-font: #fff;
     --color-result-vim-selected: #181818;
@@ -950,19 +953,19 @@ template {
     --color-result-link-visited-font: #96b;
     --color-result-publishdate-font: #777;
     --color-result-engines-font: #777;
-    --color-result-search-url-border: #333;
+    --color-result-search-url-border: #555;
     --color-result-search-url-font: #fff;
     --color-result-detail-font: #fff;
     --color-result-detail-label-font: lightgray;
     --color-result-detail-background: #000;
-    --color-result-detail-hr: #333;
+    --color-result-detail-hr: #555;
     --color-result-detail-link: #8af;
     --color-result-detail-loader-border: rgba(255, 255, 255, 0.2);
     --color-result-detail-loader-borderleft: rgba(0, 0, 0, 0);
     --color-result-image-span-background-hover: rgba(0, 0, 0, 0.6);
     --color-result-image-span-font: #fff;
     --color-result-image-background: #8af;
-    --color-settings-tr-hover: #333;
+    --color-settings-tr-hover: #2d2d2d;
     --color-settings-engine-description-font: #909090;
     --color-toolkit-badge-font: #fff;
     --color-toolkit-badge-background: #777;
@@ -971,9 +974,10 @@ template {
     --color-toolkit-dialog-border: #333;
     --color-toolkit-dialog-background: #222;
     --color-toolkit-tabs-label-border: #222;
-    --color-toolkit-tabs-section-border: #333;
-    --color-toolkit-select-border: #333;
-    --color-toolkit-checkbox-onoff-background: #ddd;
+    --color-toolkit-tabs-section-border: #555;
+    --color-toolkit-select-border: #555;
+    --color-toolkit-select-border-hover: #777;
+    --color-toolkit-checkbox-onoff-background: #3c3b31;
     --color-toolkit-checkbox-onoff-label-shadow: rgba(0, 0, 0, 0.3);
     --color-toolkit-checkbox-onoff-label-background: #58f;
     --color-toolkit-checkbox-onoff-checked-background: #ddd;
@@ -981,7 +985,7 @@ template {
     --color-toolkit-checkbox-label-border: #333;
     --color-toolkit-checkbox-input-border: #58f;
     --color-toolkit-engine-tooltip-border: #333;
-    --color-toolkit-engine-tooltip-shadow: #444;
+    --color-toolkit-engine-tooltip-shadow: #333;
     --color-toolkit-engine-tooltip-background: #222;
     --color-toolkit-loader-border: rgba(255, 255, 255, 0.2);
     --color-toolkit-loader-borderleft: rgba(0, 0, 0, 0);
@@ -1408,7 +1412,7 @@ td {
   padding: 0 4px;
 }
 tr:hover {
-  background: var(--color-settings-tr-hover);
+  background: var(--color-settings-tr-hover) !important;
 }
 div.selectable_url {
   display: block;
@@ -1702,7 +1706,10 @@ select:focus {
   }
   select:hover,
   select:focus {
-    border-bottom: 1px solid var(--color-search-border);
+    border-bottom: 1px solid var(--color-toolkit-select-border-hover);
+  }
+  select option {
+    background-color: var(--color-base-background);
   }
   @media (prefers-color-scheme: dark) {
     select {
@@ -2011,6 +2018,7 @@ article.result-images .detail {
   left: 60rem;
   right: 0;
   top: 7.5rem;
+  transition: top 0.064s ease-in 0s;
   bottom: 0;
   background: var(--color-result-detail-background);
   border: 1px solid var(--color-result-detail-background);
@@ -3062,6 +3070,12 @@ article.result-images[data-vim-selected] .image_thumbnail {
   margin: 0;
   padding: 0.7em;
 }
+#backToTop a,
+#backToTop a:visited,
+#backToTop a:hover,
+#backToTop a:active {
+  color: var(--color-backtotop-font);
+}
 #results.scrolling #backToTop {
   opacity: 1;
 }
diff --git a/searx/static/themes/simple/css/searxng-rtl.min.css b/searx/static/themes/simple/css/searxng-rtl.min.css
index 31fdeea3d..6f5bab073 100644
Binary files a/searx/static/themes/simple/css/searxng-rtl.min.css and b/searx/static/themes/simple/css/searxng-rtl.min.css differ
diff --git a/searx/static/themes/simple/css/searxng-rtl.min.css.map b/searx/static/themes/simple/css/searxng-rtl.min.css.map
index a0c2714e4..9a097efd1 100644
Binary files a/searx/static/themes/simple/css/searxng-rtl.min.css.map and b/searx/static/themes/simple/css/searxng-rtl.min.css.map differ
diff --git a/searx/static/themes/simple/css/searxng.css b/searx/static/themes/simple/css/searxng.css
index cef300bad..433ac257c 100644
--- a/searx/static/themes/simple/css/searxng.css
+++ b/searx/static/themes/simple/css/searxng.css
@@ -831,6 +831,7 @@ template {
   --color-footer-border: #ddd;
   --color-sidebar-border: #ddd;
   --color-sidebar-font: #000;
+  --color-backtotop-font: #444;
   --color-backtotop-border: #ddd;
   --color-backtotop-background: #fff;
   --color-backtotop-shadow: #ccc;
@@ -876,7 +877,7 @@ template {
   --color-result-detail-font: #fff;
   --color-result-detail-label-font: lightgray;
   --color-result-detail-background: #000;
-  --color-result-detail-hr: #333;
+  --color-result-detail-hr: #555;
   --color-result-detail-link: #8af;
   --color-result-detail-loader-border: rgba(255, 255, 255, 0.2);
   --color-result-detail-loader-borderleft: rgba(0, 0, 0, 0);
@@ -889,6 +890,7 @@ template {
   --color-toolkit-tabs-label-border: #fff;
   --color-toolkit-tabs-section-border: #ddd;
   --color-toolkit-select-border: #ddd;
+  --color-toolkit-select-border-hover: #bbb;
   --color-toolkit-checkbox-onoff-background: #ddd;
   --color-toolkit-checkbox-onoff-label-shadow: rgba(0, 0, 0, 0.3);
   --color-toolkit-checkbox-onoff-label-background: #3050ff;
@@ -913,14 +915,15 @@ template {
     --color-header-border: #333;
     --color-footer-background: #181818;
     --color-footer-border: #333;
-    --color-sidebar-border: #333;
+    --color-sidebar-border: #555;
     --color-sidebar-font: #fff;
+    --color-backtotop-font: #bbb;
     --color-backtotop-border: #333;
     --color-backtotop-background: #181818;
-    --color-backtotop-shadow: #444;
+    --color-backtotop-shadow: #333;
     --color-btn-background: #58f;
-    --color-btn-font: #fff;
-    --color-search-border: #444;
+    --color-btn-font: #222;
+    --color-search-border: #555;
     --color-search-background: #222;
     --color-search-font: #fff;
     --color-search-background-hover: #58f;
@@ -933,13 +936,13 @@ template {
     --color-categories-item-selected-font: #58f;
     --color-categories-item-border-selected: #58f;
     --color-autocomplete-font: #fff;
-    --color-autocomplete-border: #444;
+    --color-autocomplete-border: #555;
     --color-autocomplete-background: #222;
     --color-autocomplete-background-hover: #181818;
     --color-answer-border: #333;
     --color-answer-font: #bbb;
     --color-answer-background: #181818;
-    --color-result-shadow: #444;
+    --color-result-shadow: #333;
     --color-result-border: #333;
     --color-result-url-font: #fff;
     --color-result-vim-selected: #181818;
@@ -950,19 +953,19 @@ template {
     --color-result-link-visited-font: #96b;
     --color-result-publishdate-font: #777;
     --color-result-engines-font: #777;
-    --color-result-search-url-border: #333;
+    --color-result-search-url-border: #555;
     --color-result-search-url-font: #fff;
     --color-result-detail-font: #fff;
     --color-result-detail-label-font: lightgray;
     --color-result-detail-background: #000;
-    --color-result-detail-hr: #333;
+    --color-result-detail-hr: #555;
     --color-result-detail-link: #8af;
     --color-result-detail-loader-border: rgba(255, 255, 255, 0.2);
     --color-result-detail-loader-borderleft: rgba(0, 0, 0, 0);
     --color-result-image-span-background-hover: rgba(0, 0, 0, 0.6);
     --color-result-image-span-font: #fff;
     --color-result-image-background: #8af;
-    --color-settings-tr-hover: #333;
+    --color-settings-tr-hover: #2d2d2d;
     --color-settings-engine-description-font: #909090;
     --color-toolkit-badge-font: #fff;
     --color-toolkit-badge-background: #777;
@@ -971,9 +974,10 @@ template {
     --color-toolkit-dialog-border: #333;
     --color-toolkit-dialog-background: #222;
     --color-toolkit-tabs-label-border: #222;
-    --color-toolkit-tabs-section-border: #333;
-    --color-toolkit-select-border: #333;
-    --color-toolkit-checkbox-onoff-background: #ddd;
+    --color-toolkit-tabs-section-border: #555;
+    --color-toolkit-select-border: #555;
+    --color-toolkit-select-border-hover: #777;
+    --color-toolkit-checkbox-onoff-background: #3c3b31;
     --color-toolkit-checkbox-onoff-label-shadow: rgba(0, 0, 0, 0.3);
     --color-toolkit-checkbox-onoff-label-background: #58f;
     --color-toolkit-checkbox-onoff-checked-background: #ddd;
@@ -981,7 +985,7 @@ template {
     --color-toolkit-checkbox-label-border: #333;
     --color-toolkit-checkbox-input-border: #58f;
     --color-toolkit-engine-tooltip-border: #333;
-    --color-toolkit-engine-tooltip-shadow: #444;
+    --color-toolkit-engine-tooltip-shadow: #333;
     --color-toolkit-engine-tooltip-background: #222;
     --color-toolkit-loader-border: rgba(255, 255, 255, 0.2);
     --color-toolkit-loader-borderleft: rgba(0, 0, 0, 0);
@@ -1408,7 +1412,7 @@ td {
   padding: 0 4px;
 }
 tr:hover {
-  background: var(--color-settings-tr-hover);
+  background: var(--color-settings-tr-hover) !important;
 }
 div.selectable_url {
   display: block;
@@ -1702,7 +1706,10 @@ select:focus {
   }
   select:hover,
   select:focus {
-    border-bottom: 1px solid var(--color-search-border);
+    border-bottom: 1px solid var(--color-toolkit-select-border-hover);
+  }
+  select option {
+    background-color: var(--color-base-background);
   }
   @media (prefers-color-scheme: dark) {
     select {
@@ -2011,6 +2018,7 @@ article.result-images .detail {
   left: 60rem;
   right: 0;
   top: 7.5rem;
+  transition: top 0.064s ease-in 0s;
   bottom: 0;
   background: var(--color-result-detail-background);
   border: 1px solid var(--color-result-detail-background);
@@ -3062,6 +3070,12 @@ article.result-images[data-vim-selected] .image_thumbnail {
   margin: 0;
   padding: 0.7em;
 }
+#backToTop a,
+#backToTop a:visited,
+#backToTop a:hover,
+#backToTop a:active {
+  color: var(--color-backtotop-font);
+}
 #results.scrolling #backToTop {
   opacity: 1;
 }
diff --git a/searx/static/themes/simple/css/searxng.min.css b/searx/static/themes/simple/css/searxng.min.css
index fe926bda1..07be74313 100644
Binary files a/searx/static/themes/simple/css/searxng.min.css and b/searx/static/themes/simple/css/searxng.min.css differ
diff --git a/searx/static/themes/simple/css/searxng.min.css.map b/searx/static/themes/simple/css/searxng.min.css.map
index b9e4441fa..440bca556 100644
Binary files a/searx/static/themes/simple/css/searxng.min.css.map and b/searx/static/themes/simple/css/searxng.min.css.map differ
diff --git a/searx/static/themes/simple/src/less/definitions.less b/searx/static/themes/simple/src/less/definitions.less
index f574b79ea..e40acb947 100644
--- a/searx/static/themes/simple/src/less/definitions.less
+++ b/searx/static/themes/simple/src/less/definitions.less
@@ -22,6 +22,7 @@
   --color-sidebar-border: #ddd;
   --color-sidebar-font: #000;
   /// BackToTop Colors
+  --color-backtotop-font: #444;
   --color-backtotop-border: #ddd;
   --color-backtotop-background: #fff;
   --color-backtotop-shadow: #ccc;
@@ -77,7 +78,7 @@
   --color-result-detail-font: #fff;
   --color-result-detail-label-font: lightgray;
   --color-result-detail-background: #000;
-  --color-result-detail-hr: #333;
+  --color-result-detail-hr: #555;
   --color-result-detail-link: #8af;
   --color-result-detail-loader-border: rgba(255, 255, 255, 0.2);
   --color-result-detail-loader-borderleft: rgba(0, 0, 0, 0);
@@ -91,6 +92,7 @@
   --color-toolkit-tabs-label-border: #fff;
   --color-toolkit-tabs-section-border: #ddd;
   --color-toolkit-select-border: #ddd;
+  --color-toolkit-select-border-hover: #bbb;
   --color-toolkit-checkbox-onoff-background: #ddd;
   --color-toolkit-checkbox-onoff-label-shadow: rgba(0, 0, 0, 0.3);
   --color-toolkit-checkbox-onoff-label-background: #3050ff;
@@ -121,17 +123,18 @@
     --color-footer-background: #181818;
     --color-footer-border: #333;
     /// Sidebar Colors
-    --color-sidebar-border: #333;
+    --color-sidebar-border: #555;
     --color-sidebar-font: #fff;
     /// BackToTop Colors
+    --color-backtotop-font: #bbb;
     --color-backtotop-border: #333;
     --color-backtotop-background: #181818;
-    --color-backtotop-shadow: #444;
+    --color-backtotop-shadow: #333;
     /// Button Colors
     --color-btn-background: #58f;
-    --color-btn-font: #fff;
+    --color-btn-font: #222;
     /// Search Input Colors
-    --color-search-border: #444;
+    --color-search-border: #555;
     --color-search-background: #222;
     --color-search-font: #fff;
     --color-search-background-hover: #58f;
@@ -147,7 +150,7 @@
     --color-categories-item-border-selected: #58f;
     /// Autocomplete Colors
     --color-autocomplete-font: #fff;
-    --color-autocomplete-border: #444;
+    --color-autocomplete-border: #555;
     --color-autocomplete-background: #222;
     --color-autocomplete-background-hover: #181818;
     /// Answer Colors
@@ -155,7 +158,7 @@
     --color-answer-font: #bbb; // same as --color-base-font
     --color-answer-background: #181818; // same as --color-header-background:
     /// Results Colors
-    --color-result-shadow: #444;
+    --color-result-shadow: #333;
     --color-result-border: #333;
     --color-result-url-font: #fff;
     --color-result-vim-selected: #181818;
@@ -166,13 +169,13 @@
     --color-result-link-visited-font: #96b;
     --color-result-publishdate-font: #777;
     --color-result-engines-font: #777;
-    --color-result-search-url-border: #333;
+    --color-result-search-url-border: #555;
     --color-result-search-url-font: #fff;
     /// Detail modal : same as the light version
     --color-result-detail-font: #fff;
     --color-result-detail-label-font: lightgray;
     --color-result-detail-background: #000;
-    --color-result-detail-hr: #333;
+    --color-result-detail-hr: #555;
     --color-result-detail-link: #8af;
     --color-result-detail-loader-border: rgba(255, 255, 255, 0.2);
     --color-result-detail-loader-borderleft: rgba(0, 0, 0, 0);
@@ -181,7 +184,7 @@
     --color-result-image-span-font: #fff;
     --color-result-image-background: #8af;
     /// Settings Colors
-    --color-settings-tr-hover: #333;
+    --color-settings-tr-hover: #2d2d2d;
     --color-settings-engine-description-font: darken(#dcdcdc, 30%);
     /// Toolkit Colors
     --color-toolkit-badge-font: #fff;
@@ -191,9 +194,10 @@
     --color-toolkit-dialog-border: #333;
     --color-toolkit-dialog-background: #222;
     --color-toolkit-tabs-label-border: #222;
-    --color-toolkit-tabs-section-border: #333;
-    --color-toolkit-select-border: #333;
-    --color-toolkit-checkbox-onoff-background: #ddd;
+    --color-toolkit-tabs-section-border: #555;
+    --color-toolkit-select-border: #555;
+    --color-toolkit-select-border-hover: #777;
+    --color-toolkit-checkbox-onoff-background: #3c3b31;
     --color-toolkit-checkbox-onoff-label-shadow: rgba(0, 0, 0, 0.3);
     --color-toolkit-checkbox-onoff-label-background: #58f;
     --color-toolkit-checkbox-onoff-checked-background: #ddd;
@@ -201,7 +205,7 @@
     --color-toolkit-checkbox-label-border: #333;
     --color-toolkit-checkbox-input-border: #58f;
     --color-toolkit-engine-tooltip-border: #333;
-    --color-toolkit-engine-tooltip-shadow: #444;
+    --color-toolkit-engine-tooltip-shadow: #333;
     --color-toolkit-engine-tooltip-background: #222;
     --color-toolkit-loader-border: rgba(255, 255, 255, 0.2);
     --color-toolkit-loader-borderleft: rgba(0, 0, 0, 0);
diff --git a/searx/static/themes/simple/src/less/detail.less b/searx/static/themes/simple/src/less/detail.less
index c12883c12..452544a34 100644
--- a/searx/static/themes/simple/src/less/detail.less
+++ b/searx/static/themes/simple/src/less/detail.less
@@ -18,6 +18,7 @@ article.result-images .detail {
   left: 60rem;
   right: 0;
   top: @search-height;
+  transition: top 0.064s ease-in 0s;
   bottom: 0;
   background: var(--color-result-detail-background);
   border: 1px solid var(--color-result-detail-background);
diff --git a/searx/static/themes/simple/src/less/style.less b/searx/static/themes/simple/src/less/style.less
index 50edf6eab..8fc760aaa 100644
--- a/searx/static/themes/simple/src/less/style.less
+++ b/searx/static/themes/simple/src/less/style.less
@@ -563,6 +563,13 @@ article.result-images[data-vim-selected] {
     margin: 0;
     padding: 0.7em;
   }
+
+  a,
+  a:visited,
+  a:hover,
+  a:active {
+    color: var(--color-backtotop-font);
+  }
 }
 
 #results.scrolling #backToTop {
diff --git a/searx/static/themes/simple/src/less/toolkit.less b/searx/static/themes/simple/src/less/toolkit.less
index 681da43e7..fef59b5a6 100644
--- a/searx/static/themes/simple/src/less/toolkit.less
+++ b/searx/static/themes/simple/src/less/toolkit.less
@@ -89,7 +89,7 @@ td {
 
 tr {
   &:hover {
-    background: var(--color-settings-tr-hover);
+    background: var(--color-settings-tr-hover) !important;
   }
 }
 
@@ -336,7 +336,11 @@ select {
 
     &:hover,
     &:focus {
-      border-bottom: 1px solid var(--color-search-border);
+      border-bottom: 1px solid var(--color-toolkit-select-border-hover);
+    }
+
+    option {
+      background-color: var(--color-base-background);
     }
   }