Examine source code of Rose Pine (Main)

{
  "name": "Rose Pine (Main)",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Untitled.png"
    },
    "colors": {
      "frame": "rgba(25, 23, 36, 1)",
      "tab_background_text": "rgba(224, 222, 244, 1)",
      "toolbar": "rgba(31, 29, 46, 1)",
      "bookmark_text": "rgba(224, 222, 244, 1)",
      "toolbar_field": "rgba(38, 35, 58, 1)",
      "toolbar_field_text": "rgba(224, 222, 244, 1)",
      "tab_line": "rgba(49, 116, 143, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{8c95b4e2-aee3-45e6-a453-3ac233665c0e}"
    }
  }
}