Examine source code of Corners and Edges

{
  "name": "Pale Glossy",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "pale-glossy.png"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(217, 217, 217, 0.77)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(43, 43, 43, 1)",
      "toolbar_field_text": "rgba(224, 224, 224, 1)",
      "tab_line": "rgba(214, 201, 64, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c6c0e998-7bae-4dad-b501-1a2eb7aec6a1}"
    }
  }
}