G-CAL Highlighter

You can customize the text and background colors for days like Sunday,Saturday,Today,holidays in Google Calendar to your liking.

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manifest.json

{
  "version": "1.7.0",
  "manifest_version": 3,
  "default_locale": "en",
  "background": {
    "service_worker": "js/background.js"
  },
  "oauth2": {
    "client_id": "604511844075-i3hnrnqhvhvr5t652sc8hisq87750bnq.apps.googleusercontent.com",
    "scopes": [
      "https://www.googleapis.com/auth/calendar.readonly"
    ]
  },
  "content_scripts": [
    {
      "all_frames": false,
      "js": [
        "js/content_main.js"
      ],
      "matches": [
        "http://*.google.com/calendar/*",
        "https://*.google.com/calendar/*"
      ],
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "js/*",
        "css/*",
        "img/*",
        "css/fonts/*",
        "html/*",
        "getFrameId",
        "_locales/*"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ]
    }
  ],
  "permissions": [
    "storage",
    "contextMenus",
    "alarms",
    "tabs"
  ],
  "options_ui": {
    "page": "html/options.html",
    "open_in_tab": true
  },
  "action": {
    "default_icon": "img/g-cal-icon_64.png",
    "default_title": "g-cal"
  },
  "icons": {
    "64": "img/g-cal-icon_64.png",
    "100": "img/g-cal-icon_100.png",
    "128": "img/g-cal-icon_128.png",
    "512": "img/g-cal-icon_512.png"
  },
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "minimum_chrome_version": "88",
  "update_url": "https://edge.microsoft.com/extensionwebstorebase/v1/crx"
}