diff --git a/apps/frontend/src/models/CardType.ts b/apps/frontend/src/models/CardType.ts
index a6627731f6a28..92b90804ab20f 100644
--- a/apps/frontend/src/models/CardType.ts
+++ b/apps/frontend/src/models/CardType.ts
@@ -6,3 +6,30 @@ export const CardType = {
   WAKATIME: "wakatime",
 } as const;
 export type CardType = (typeof CardType)[keyof typeof CardType];
+
+export const CardCategory = {
+  /**
+   * Cards describing a single repo or gist.
+   * They accept `show_owner` and use the `_repocard` theme variants.
+   */
+  REPO: "repo",
+  /**
+   * Cards describing a user: stats, top languages and WakaTime.
+   */
+  USER: "user",
+} as const;
+export type CardCategory = (typeof CardCategory)[keyof typeof CardCategory];
+
+/**
+ * Category each card belongs to.
+ *
+ * Exhaustive by construction: a new {@link CardType} will not compile until it
+ * is categorised here, rather than silently falling into one of the branches.
+ */
+export const CATEGORY_BY_CARD_TYPE: Record<CardType, CardCategory> = {
+  [CardType.STATS]: CardCategory.USER,
+  [CardType.TOP_LANGS]: CardCategory.USER,
+  [CardType.WAKATIME]: CardCategory.USER,
+  [CardType.PIN]: CardCategory.REPO,
+  [CardType.GIST]: CardCategory.REPO,
+};
diff --git a/apps/frontend/src/pages/Home/Home.tsx b/apps/frontend/src/pages/Home/Home.tsx
index 7c22adef91d09..52788559be50a 100644
--- a/apps/frontend/src/pages/Home/Home.tsx
+++ b/apps/frontend/src/pages/Home/Home.tsx
@@ -1,3 +1,4 @@
+import type { ThemeName } from "@stats-organization/github-readme-stats-core";
 import { useCallback, useEffect, useMemo, useRef, useState } from "react";
 import type { JSX } from "react";
 import { useDispatch } from "react-redux";
@@ -8,7 +9,11 @@ import { authenticate } from "../../api/user";
 import { DEFAULT_OPTION as LANGUAGES_DEFAULT_LAYOUT } from "../../components/Home/LanguagesLayoutSection";
 import { DEFAULT_OPTION as WAKATIME_DEFAULT_LAYOUT } from "../../components/Home/WakatimeLayoutSection";
 import { DEMO_USER } from "../../constants";
-import { CardType } from "../../models/CardType";
+import {
+  CATEGORY_BY_CARD_TYPE,
+  CardCategory,
+  CardType,
+} from "../../models/CardType";
 import { STAGE_LABELS } from "../../models/Stage";
 import type { StageIndex } from "../../models/Stage";
 import { useTheme } from "../../redux/selectors/themeSelectors";
@@ -34,6 +39,13 @@ interface HomeScreenProps {
   setStage: (stageIndex: StageIndex) => void;
 }
 
+function getDefaultTheme(isDark: boolean, category: CardCategory): ThemeName {
+  if (category === CardCategory.REPO) {
+    return isDark ? "dark_github_repocard" : "light_github_repocard";
+  }
+  return isDark ? "dark_github" : "light_github";
+}
+
 export function HomeScreen({ stage, setStage }: HomeScreenProps): JSX.Element {
   const [isLoading, setIsLoading] = useState(false);
 
@@ -66,7 +78,10 @@ export function HomeScreen({ stage, setStage }: HomeScreenProps): JSX.Element {
   }
 
   const { isDark } = useTheme();
-  const [theme, setTheme] = useState(isDark ? "dark" : "default");
+  const cardCategory = CATEGORY_BY_CARD_TYPE[selectedCard];
+  const [theme, setTheme] = useState(() =>
+    getDefaultTheme(isDark, cardCategory),
+  );
 
   const handleCardTypeChange = (cardType: CardType) => {
     if (cardType === CardType.TOP_LANGS) {
@@ -83,12 +98,8 @@ export function HomeScreen({ stage, setStage }: HomeScreenProps): JSX.Element {
       }));
     }
 
-    if (theme === "default" || theme === "default_repocard") {
-      if (cardType === CardType.PIN || cardType === CardType.GIST) {
-        setTheme("default_repocard");
-      } else {
-        setTheme("default");
-      }
+    if (theme === getDefaultTheme(isDark, cardCategory)) {
+      setTheme(getDefaultTheme(isDark, CATEGORY_BY_CARD_TYPE[cardType]));
     }
 
     setSelectedCard(cardType);
@@ -107,19 +118,14 @@ export function HomeScreen({ stage, setStage }: HomeScreenProps): JSX.Element {
 
   // Preview builder for the customize stage, dark-themed to match the surroundings.
   const customizeCardBuilder = useMemo(
-    () => (isDark ? cardBuilder.theme("github_dark") : cardBuilder),
-    [cardBuilder, isDark],
+    () => cardBuilder.theme(getDefaultTheme(isDark, cardCategory)),
+    [cardBuilder, isDark, cardCategory],
   );
 
   // for stage four
-  const isRepoCard =
-    selectedCard === CardType.PIN || selectedCard === CardType.GIST;
-  const defaultTheme = isRepoCard ? "default_repocard" : "default";
-  const isDefaultTheme = theme === defaultTheme;
-
   const themeBuilder = useMemo(
-    () => (isDefaultTheme ? cardBuilder : cardBuilder.theme(theme)),
-    [cardBuilder, isDefaultTheme, theme],
+    () => cardBuilder.theme(theme),
+    [cardBuilder, theme],
   );
 
   // for stage five
@@ -252,6 +258,7 @@ export function HomeScreen({ stage, setStage }: HomeScreenProps): JSX.Element {
             <ThemeStage
               card={cardBuilder}
               theme={theme}
+              category={cardCategory}
               onThemeChange={(theme) => {
                 setTheme(theme);
                 setStage(4);
diff --git a/apps/frontend/src/pages/Home/stages/Customize.tsx b/apps/frontend/src/pages/Home/stages/Customize.tsx
index 50c828ec55d04..3336aaeaf7ef3 100644
--- a/apps/frontend/src/pages/Home/stages/Customize.tsx
+++ b/apps/frontend/src/pages/Home/stages/Customize.tsx
@@ -13,7 +13,11 @@ import {
   DEMO_USER,
   DEMO_WAKATIME_USER,
 } from "../../../constants";
-import { CardType } from "../../../models/CardType";
+import {
+  CATEGORY_BY_CARD_TYPE,
+  CardCategory,
+  CardType,
+} from "../../../models/CardType";
 import type { CardUrlBuilder } from "../../../models/CardUrl";
 import type { StageIndex } from "../../../models/Stage";
 import { useIsAuthenticated } from "../../../redux/selectors/userSelectors";
@@ -367,7 +371,7 @@ export function CustomizeStage({
             }}
           />
         )}
-        {(cardType === CardType.PIN || cardType === CardType.GIST) && (
+        {CATEGORY_BY_CARD_TYPE[cardType] === CardCategory.REPO && (
           <CheckboxSection
             title="Show Owner?"
             text="Shows the repo owner's name next to the repo name."
diff --git a/apps/frontend/src/pages/Home/stages/Theme.tsx b/apps/frontend/src/pages/Home/stages/Theme.tsx
index 7d386b812cb91..54d7688268423 100644
--- a/apps/frontend/src/pages/Home/stages/Theme.tsx
+++ b/apps/frontend/src/pages/Home/stages/Theme.tsx
@@ -1,3 +1,4 @@
+import type { ThemeName } from "@stats-organization/github-readme-stats-core";
 import { themes } from "@stats-organization/github-readme-stats-core";
 import type { JSX } from "react";
 
@@ -6,10 +7,14 @@ import {
   getCardThemeBackdrop,
   getThemeSortRank,
 } from "../../../components/Card/themeBackdrop";
+import { CardCategory } from "../../../models/CardType";
 import type { CardUrlBuilder } from "../../../models/CardUrl";
 import { useTheme } from "../../../redux/selectors/themeSelectors";
 
-const excludedThemes = [
+const excludedThemes: Array<ThemeName> = [
+  "default",
+  "default_repocard",
+  "github_dark",
   "merko",
   "blue-green",
   "gotham",
@@ -18,29 +23,52 @@ const excludedThemes = [
   "holi",
 ];
 
+const allThemeNames = Object.keys(themes) as Array<ThemeName>;
+
 // Light themes first, adaptive themes in the middle, dark themes last.
-const themeList = Object.keys(themes)
-  .filter((myTheme) => !excludedThemes.includes(myTheme))
-  .sort((a, b) => getThemeSortRank(a) - getThemeSortRank(b));
+const forPicker = (names: ReadonlyArray<ThemeName>) =>
+  names
+    .filter((name) => !excludedThemes.includes(name))
+    .sort((a, b) => getThemeSortRank(a) - getThemeSortRank(b));
+
+// Some themes come in pairs: `X_repocard` for the repo and gist cards, `X` for
+// the stats, top languages and WakaTime cards. Each side offers only its own
+// variant, so the theme Home.tsx starts on is always one of the entries here.
+//
+// Keep in sync with `generateTable` in `packages/core/scripts/generate-theme-readme.js`,
+// which splits the theme README tables by the same rule.
+const repoCardThemes = forPicker(
+  allThemeNames.filter(
+    (name) => !allThemeNames.includes(`${name}_repocard` as ThemeName),
+  ),
+);
+
+const nonRepoCardThemes = forPicker(
+  allThemeNames.filter((name) => !name.endsWith("_repocard")),
+);
 
 interface ThemeStageProps {
   card: CardUrlBuilder;
   theme: string;
-  onThemeChange: (theme: string) => void;
+  category: CardCategory;
+  onThemeChange: (theme: ThemeName) => void;
 }
 
 export function ThemeStage({
   theme,
   card,
+  category,
   onThemeChange,
 }: ThemeStageProps): JSX.Element {
   const { isDark } = useTheme();
+  const themeList =
+    category === CardCategory.REPO ? repoCardThemes : nonRepoCardThemes;
 
   return (
     <>
       <div className="flex flex-wrap">
         {themeList.map((myTheme) => {
-          const themeColors = themes[myTheme as keyof typeof themes];
+          const themeColors = themes[myTheme];
           return (
             <button
               className="p-2 lg:p-4"
diff --git a/packages/core/scripts/generate-theme-readme.js b/packages/core/scripts/generate-theme-readme.js
index 5793d737332a5..ee0f2a11a305f 100644
--- a/packages/core/scripts/generate-theme-readme.js
+++ b/packages/core/scripts/generate-theme-readme.js
@@ -64,11 +64,25 @@ const createTableItem = ({ link, label, isRepoCard }) => {
   return `\`${label}\` ![${link}][${link}${isRepoCard ? "_repo" : ""}]`;
 };
 
+const allThemeNames = Object.keys(themes);
+
+// Some themes come in pairs: `X_repocard` for the repo and gist cards, `X` for
+// the stats, top languages and WakaTime cards. Each table lists only its own
+// variant.
+//
+// Keep in sync with the theme lists in `apps/frontend/src/pages/Home/stages/Theme.tsx`,
+// which splits the picker by the same rule.
+const repoCardThemes = allThemeNames.filter(
+  (name) => !allThemeNames.includes(`${name}_repocard`),
+);
+
+const nonRepoCardThemes = allThemeNames.filter(
+  (name) => !name.endsWith("_repocard"),
+);
+
 const generateTable = ({ isRepoCard }) => {
   const rows = [];
-  const themesFiltered = Object.keys(themes).filter(
-    (name) => name !== (isRepoCard ? "default" : "default_repocard"),
-  );
+  const themesFiltered = isRepoCard ? repoCardThemes : nonRepoCardThemes;
 
   for (let i = 0; i < themesFiltered.length; i += 3) {
     const one = themesFiltered[i];
diff --git a/packages/core/src/cards/types.ts b/packages/core/src/cards/types.ts
index 3c0f5835073b3..91c3e503077e5 100644
--- a/packages/core/src/cards/types.ts
+++ b/packages/core/src/cards/types.ts
@@ -1,13 +1,11 @@
-import type { themes } from "../themes/index.js";
-
-type ThemeNames = keyof typeof themes;
+import type { ThemeName } from "../themes/index.js";
 
 export interface CommonOptions {
   title_color: string;
   icon_color: string;
   text_color: string;
   bg_color: string;
-  theme: ThemeNames;
+  theme: ThemeName;
   border_radius: number;
   border_color: string;
   locale: string;
diff --git a/packages/core/src/common/color.ts b/packages/core/src/common/color.ts
index 644835664ea96..e798eb7eb016f 100644
--- a/packages/core/src/common/color.ts
+++ b/packages/core/src/common/color.ts
@@ -1,4 +1,5 @@
 import { themes } from "../themes/index.js";
+import type { ThemeName } from "../themes/index.js";
 
 /** Matches a 3-, 4-, 6-, or 8-digit hex color with no leading `#`. */
 const HEX_COLOR =
@@ -174,7 +175,7 @@ const getCardColors = ({
   const isThemeProvided = theme !== undefined && theme in themes;
 
   const selectedTheme = isThemeProvided
-    ? themes[theme as keyof typeof themes]
+    ? themes[theme as ThemeName]
     : defaultTheme;
 
   const defaultBorderColor =
diff --git a/packages/core/src/index.ts b/packages/core/src/index.ts
index 241db1eb373aa..5d0e704224cc4 100644
--- a/packages/core/src/index.ts
+++ b/packages/core/src/index.ts
@@ -23,3 +23,4 @@ export { default as wakatime } from "./api/wakatime.js";
 export { getConfig, loadConfigFromEnv } from "./common/config.js";
 
 export { themes } from "./themes/index.js";
+export type { ThemeName } from "./themes/index.js";
diff --git a/packages/core/src/themes/index.ts b/packages/core/src/themes/index.ts
index 565cd3a9413f0..f2d94b7ea14ec 100644
--- a/packages/core/src/themes/index.ts
+++ b/packages/core/src/themes/index.ts
@@ -23,6 +23,34 @@ export const themes = {
     text_color: "434d58",
     bg_color: "fffefe",
   },
+  light_github: {
+    title_color: "0969da",
+    icon_color: "0969da",
+    text_color: "59636e",
+    bg_color: "ffffff",
+    border_color: "d1d9e0",
+  },
+  dark_github: {
+    title_color: "4493f8",
+    icon_color: "4493f8",
+    text_color: "9198a1",
+    bg_color: "0d1117",
+    border_color: "3d444d",
+  },
+  light_github_repocard: {
+    title_color: "0969da",
+    icon_color: "59636e",
+    text_color: "59636e",
+    bg_color: "ffffff",
+    border_color: "d1d9e0",
+  },
+  dark_github_repocard: {
+    title_color: "4493f8",
+    icon_color: "9198a1",
+    text_color: "9198a1",
+    bg_color: "0d1117",
+    border_color: "3d444d",
+  },
   transparent: {
     title_color: "006AFF",
     icon_color: "0579C3",
@@ -474,3 +502,8 @@ export const themes = {
     bg_color: "35,4158d0,c850c0,ffcc70",
   },
 } as const satisfies Record<string, Theme>;
+
+/**
+ * Name of one of the {@link themes}.
+ */
+export type ThemeName = keyof typeof themes;