diff --git a/assets/css/custom.css b/assets/css/custom.css
index 8b5a209af17..d7ec3178e09 100644
--- a/assets/css/custom.css
+++ b/assets/css/custom.css
@@ -508,3 +508,206 @@ are added in post-processing.
     }
   }
 }
+
+
+/* Mirrors the change in:
+ *   https://github.com/sphinx-doc/sphinx/pull/5976
+ * which is not showing up in our theme.
+ */
+.classifier:before {
+    font-style: normal;
+    margin: 0.5em;
+    content: ":";
+}
+
+/* Fix for text wrap in sphinx tables:
+ * https://rackerlabs.github.io/docs-rackspace/tools/rtd-tables.html 
+ */
+@media screen and (min-width: 767px) {
+
+    .wy-table-responsive table td {
+       /* !important prevents the common CSS stylesheets from overriding
+          this as on RTD they are loaded after this stylesheet */
+       white-space: normal !important;
+    }
+ 
+    .wy-table-responsive {
+       overflow: visible !important;
+    }
+ }
+
+
+table.io-supported-types-table {
+    text-align: center
+}
+
+table.io-supported-types-table thead{
+    text-align: center !important;
+}
+
+:root {
+
+  --pst-color-active-navigation: 114, 83, 237;
+  --pst-color-navbar-link: 77, 77, 77;
+  --pst-color-navbar-link-hover: var(--pst-color-active-navigation);
+  --pst-color-navbar-link-active: var(--pst-color-active-navigation);
+  --pst-color-sidebar-link: 77, 77, 77;
+  --pst-color-sidebar-link-hover: var(--pst-color-active-navigation);
+  --pst-color-sidebar-link-active: var(--pst-color-active-navigation);
+  --pst-color-sidebar-expander-background-hover: 244, 244, 244;
+  --pst-color-sidebar-caption: 77, 77, 77;
+  --pst-color-toc-link: 119, 117, 122;
+  --pst-color-toc-link-hover: var(--pst-color-active-navigation);
+  --pst-color-toc-link-active: var(--pst-color-active-navigation);
+
+}
+
+/* Used to make special-table scrollable when it overflows */
+.special-table-wrapper {
+    width: 100%;
+    overflow: auto !important;
+}
+
+.special-table td, .special-table th {
+    border: 1px solid #dee2e6;
+}
+
+/* Needed to resolve https://github.com/executablebooks/jupyter-book/issues/1611 */
+.output.text_html {
+    overflow: auto;
+}
+
+/* pydata-sphinx-theme light and dark mode theme color settings */
+html[data-theme="light"] {
+    --pst-color-primary: rgb(114, 83, 237);
+    --pst-color-text-base: rgb(51, 51, 51);
+    --pst-color-secondary: rgb(227, 46, 0);
+    --pst-table-background-color: transparent;
+}
+
+
+html[data-theme="dark"] {
+    --pst-color-primary: rgb(114, 83, 237);
+    --pst-color-inline-code: rgb(248, 6, 204);
+    --pst-table-background-color: var(--pst-color-text-muted);
+}
+
+div.cell_output table{
+    background: var(--pst-table-background-color);
+}
+
+
+/*
+ * libcudf doxygen rules start
+ * 
+ */
+
+/* sm-dox is the CSS class Doxygen uses for the main navigation menu bar */
+.sm-dox {
+  background-image:none;              /* override Doxygen background images */
+  background-color: #7306ff;        /* rapids.ai menu background purple */
+}
+
+/* Menu links */
+.sm-dox a, 
+.sm-dox a:focus,
+.sm-dox a:hover,
+.sm-dox a:active,
+.sm-dox a.highlighted {
+  background-image:none;              /* override Doxygen background images */
+  color: white;                     /* rapids.ai menu white font */
+  font-family:"Open Sans",sans-serif; /* rapids.ai menu font family */
+  /* rapids.ai uppercase menus, no decoration or shadows, 1em size */
+  text-decoration: none;              
+  text-transform: uppercase;
+  text-shadow: none;
+  font-weight: normal;
+  font-size: 1em;
+}
+
+.sm-dox a:hover {
+  background-image:none;                    /* override Doxygen background images */
+  color: #a785e7;                         /* rapids.ai menu text hover color */
+  -webkit-transition: all 0.3s ease-in-out; /* rapids.ai menu fade when hover */
+  -moz-transition: all 0.3s ease-in-out;
+  -o-transition: all 0.3s ease-in-out;
+  transition: all 0.3s ease-in-out;
+}
+
+/* These are the triangles to the right of menus that open up. Make them match the font/fade */
+.sm-dox a span.sub-arrow {
+  border-top-color: white;
+}
+
+.sm-dox a:hover span.sub-arrow {
+  border-top-color: #a785e7;              /* rapids.ai menu text hover color */
+  -webkit-transition: all 0.3s ease-in-out; /* rapids.ai menu fade when hover */
+  -moz-transition: all 0.3s ease-in-out;
+  -o-transition: all 0.3s ease-in-out;
+  transition: all 0.3s ease-in-out;
+}
+
+/* sm-dox ul is the drop-down menus that appear when you mouse over hierarchical menus.
+   Make these white but highlight hovered items with rapids purple background and white text. */
+.sm-dox ul a {
+  font-size: 1em;
+}
+
+.sm-dox ul a:hover {
+  background-image:none;
+  background-color: #7306ff;            
+  font-size: 1em;
+  text-shadow: none;
+  -webkit-transition: all 0.3s ease-in-out;
+  -moz-transition: all 0.3s ease-in-out;
+  -o-transition: all 0.3s ease-in-out;
+  transition: all 0.3s ease-in-out;
+}
+
+/* Sub menu (underneath the main Doxygen bar) is a ul with class navpath that shows
+   the C++ class hierarchy.
+*/
+.navpath ul
+{
+  font-size: 13px;             /* Bigger than Doxygen default looks a bit better */
+  background-image:none;       /* Override Doxygen gradient background image */
+  background-color: #FAF6FF; /* A nearly white RAPIDS purple background */
+  border-top:none;             /* Override Doxygen top border for class hierarchy menu since 
+                                  it doesn't match the menu above. */
+}
+
+/* Note we don't override the background on li tags here because we want to keep the ">"
+   background images Doxygen uses here as separators */
+.navpath li.navelem {
+  background-color: #FAF6FF;   /* A nearly white RAPIDS purple background */
+}
+
+/* Add some CSS to make class / function lists nicer in the presence of long templated names */
+
+.directory td.entry {
+  white-space: normal;                /* Allow text wrapping for long class names */
+  min-width:   512px;                 /* But don't wrap them too much. */
+
+  /* This indent and padding causes any long class names that are wrapped to be indented on 
+     wrapped lines */
+  text-indent: -65px;
+  padding-left: 55px;
+}
+
+/* Prevent arrows from being negatively indented */
+.arrow {
+  text-indent: 0px;
+  padding-left: 10px;
+}
+
+/* Prevent icons from being negatively indented */
+.icona {
+  text-indent: 0px;
+  padding-left: 0px;
+}
+
+/*
+ * libcudf doxygen rules end
+ * 
+ */
+
diff --git a/assets/js/custom.js b/assets/js/custom.js
index 52200950ee2..be4487a1ebd 100644
--- a/assets/js/custom.js
+++ b/assets/js/custom.js
@@ -106,3 +106,25 @@ document.addEventListener("click", function(e) {
     closeOpenedMenusExcept();
   }
 });
+
+function update_switch_theme_button() {
+    current_theme = document.documentElement.dataset.mode;
+    if (!current_theme) return;
+    if (current_theme == "light") {
+        document.getElementById("theme-switch").title = "Switch to auto theme";
+    } else if (current_theme == "auto") {
+        document.getElementById("theme-switch").title = "Switch to dark theme";
+    } else {
+        document.getElementById("theme-switch").title = "Switch to light theme";
+    }
+}
+
+$(document).ready(function() {
+    var observer = new MutationObserver(function(mutations) {
+        update_switch_theme_button();
+    })
+    observer.observe(document.documentElement, {
+        attributes: true,
+        attributeFilter: ['data-theme']
+    });
+});