Examine source code of spotify-ish

{
  "name": "spotify-ish",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Screenshot From 2026-04-16 06-19-07.png"
    },
    "colors": {
      "frame": "rgba(36, 36, 36, 1)",
      "tab_background_text": "rgba(189, 189, 189, 1)",
      "toolbar": "rgba(66, 66, 66, 1)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(48, 48, 48, 1)",
      "toolbar_field_text": "rgba(204, 204, 204, 1)",
      "tab_line": "rgba(84, 153, 110, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{3e8a4144-a225-4ebe-a6f2-a6793942b15a}"
    }
  }
}