YouTube No Saturated Hover

Removes YouTube's 2025 saturated hover effects.

// ==UserScript==
// @name         YouTube No Saturated Hover
// @namespace    https://greasyfork.org/users/1476331-jon78
// @match        *://*.youtube.com/*
// @run-at       document-start
// @grant        none
// @version      1.1
// @description  Removes YouTube's 2025 saturated hover effects.
// @license      CC0
// ==/UserScript==

(() => {
  "use strict";

  const ID = "no-saturated-hover";
  let styleEl, dark, fixTimer, rafPending, obs;

  const detectDark = () => {
    const html = document.documentElement;
    if (html.hasAttribute("dark") || html.classList.contains("dark-theme")) return true;
    if (html.hasAttribute("light") || html.classList.contains("light-theme")) return false;
    const bg = getComputedStyle(html).getPropertyValue("--yt-spec-base-background").trim();
    if (bg.startsWith("rgb(")) {
      const [r, g, b] = bg.match(/\d+/g).map(Number);
      return (r + g + b) / 3 < 60;
    }
    return false;
  };

const css = d => `
/* --- Theme Variable Setup --- */
html {
  --ytc-base-background:${d ? "#0f0f0f" : "#fff"};
  --ytc-additive-background:${d ? "rgba(255,255,255,0.1)" : "rgba(0,0,0,0.05)"};
  --ytc-text-primary:${d ? "#f1f1f1" : "#0f0f0f"};
  --ytc-text-secondary:${d ? "#aaa" : "#606060"};
  /* Safely chain to YouTube's native variables */
  --yt-spec-base-background:var(--yt-spec-base-background,var(--ytc-base-background));
  --yt-spec-additive-background:var(--yt-spec-additive-background,var(--ytc-additive-background));
  --yt-spec-text-primary:var(--yt-spec-text-primary,var(--ytc-text-primary));
  --yt-spec-text-secondary:var(--yt-spec-text-secondary,var(--ytc-text-secondary));
}

/* === HOMEPAGE === */
/* --- Disable saturated hover shapes --- */
.yt-spec-touch-feedback-shape__hover-effect,
.yt-spec-touch-feedback-shape__stroke,
.yt-spec-touch-feedback-shape__fill {
  display:none!important;
  opacity:0!important;
  pointer-events:none!important;
}

/* --- Remove highlight from promoted videos --- */
ytd-rich-item-renderer.ytd-rich-item-renderer-highlight {
  background:transparent!important;
  box-shadow:none!important;
  --yt-spec-outline:transparent!important;
}

/* --- Title color --- */
ytd-rich-grid-renderer #video-title,
.yt-lockup-metadata-view-model__title,
.yt-lockup-metadata-view-model__title a {
  color:var(--yt-spec-text-primary,var(--ytc-text-primary))!important;
}

/* --- Metadata color --- */
.yt-lockup-metadata-view-model__metadata,
.yt-lockup-metadata-view-model__metadata span,
#metadata-line span {
  color:var(--yt-spec-text-secondary,var(--ytc-text-secondary))!important;
}

/* === WATCH PAGE === */
/* --- Description/metadata/snippet text color --- */
ytd-watch-metadata #description,
ytd-video-secondary-info-renderer #description,
ytd-watch-info-text,
#metadata.ytd-watch-info-text,
#metadata-line.ytd-video-primary-info-renderer span,
#snippet-text,
#snippet-text *,
#attributed-snippet-text,
#attributed-snippet-text * {
  color: var(--yt-spec-text-primary, var(--ytc-text-primary)) !important;
}

/* --- Snippet/Metadata text hover color --- */
#snippet-text:hover,
#snippet-text *:hover,
#attributed-snippet-text:hover,
#attributed-snippet-text *:hover,
ytd-watch-info-text *:hover {
  color: var(--yt-spec-text-primary, var(--ytc-text-primary)) !important;
  filter: none !important;
  opacity: 1 !important;
}

/* --- Highlighted links --- */
.yt-core-attributed-string--highlight-text-decorator a.yt-core-attributed-string__link--call-to-action-color,
.yt-core-attributed-string--link-inherit-color .yt-core-attributed-string--highlight-text-decorator a.yt-core-attributed-string__link--call-to-action-color {
  color: var(--yt-spec-text-primary, var(--ytc-text-primary)) !important;
}

/* --- Call-to-action (blue links, hashtags) — exclude highlighted links --- */
ytd-watch-metadata :not(.yt-core-attributed-string--highlight-text-decorator) > .yt-core-attributed-string__link--call-to-action-color,
#snippet-text :not(.yt-core-attributed-string--highlight-text-decorator) > .yt-core-attributed-string__link--call-to-action-color,
#attributed-snippet-text :not(.yt-core-attributed-string--highlight-text-decorator) > .yt-core-attributed-string__link--call-to-action-color {
  color: var(--yt-spec-call-to-action, #3ea6ff) !important;
}

/* --- Reset saturation vars --- */
ytd-watch-metadata, .ytd-watch-metadata {
  --yt-saturated-base-background:var(--ytc-base-background);
  --yt-saturated-raised-background:var(--yt-spec-additive-background,var(--ytc-additive-background));
  --yt-saturated-additive-background:var(--yt-spec-additive-background,var(--ytc-additive-background));
  --yt-saturated-text-primary:var(--yt-spec-text-primary,var(--ytc-text-primary));
  --yt-saturated-text-secondary:var(--yt-spec-text-secondary,var(--ytc-text-secondary));
  --yt-saturated-overlay-background:var(--yt-spec-additive-background,var(--ytc-additive-background));
  --yt-spec-overlay-background:var(--yt-spec-additive-background,var(--ytc-additive-background));
  --yt-spec-static-overlay-background-light:var(--yt-spec-additive-background,var(--ytc-additive-background));
}

/* --- Highlighted links background --- */
.yt-core-attributed-string--highlight-text-decorator {
  background-color:var(--yt-spec-static-overlay-background-light,${d ? "rgba(255,255,255,0.102)" : "rgba(0,0,0,0.051)"})!important;
  border-radius:8px!important;
  padding-bottom:1px!important;
}
`.trim();

  const applyStyle = d => {
    if (!(styleEl = document.getElementById(ID))) {
      styleEl = document.createElement("style");
      styleEl.id = ID;
      document.head.append(styleEl);
    }
    styleEl.textContent = css(d);
  };

  const fixHighlights = () => {
    const expected = dark ? "rgba(255, 255, 255, 0.102)" : "rgba(0, 0, 0, 0.051)";
    document.querySelectorAll(".yt-core-attributed-string--highlight-text-decorator").forEach(el => {
      if (el.style.backgroundColor !== expected) el.style.backgroundColor = expected;
    });
  };

  const scheduleFix = () => {
    if (rafPending) return;
    rafPending = true;
    requestAnimationFrame(() => {
      rafPending = false;
      clearTimeout(fixTimer);
      fixTimer = setTimeout(fixHighlights, 60);
    });
  };

  const refresh = () => {
    const d = detectDark();
    if (d !== dark) {
      dark = d;
      applyStyle(d);
    }
    scheduleFix();
  };

  const init = () => {
    dark = detectDark();
    applyStyle(dark);
    scheduleFix();
    addEventListener("yt-navigate-start", refresh, { passive: true });
    addEventListener("yt-navigate-finish", refresh, { passive: true });
    addEventListener("yt-dark-mode-toggled", refresh, { passive: true });
    obs = new MutationObserver(scheduleFix);
    obs.observe(document.documentElement, { attributes: true, attributeFilter: ["dark", "light", "class"] });
    addEventListener("pagehide", () => obs.disconnect(), { once: true });
  };

  document.head ? init() : addEventListener("DOMContentLoaded", init, { once: true });
})();