Examine source code of Blue w dark

{
  "name": "Blue w dark",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "111111111.png"
    },
    "colors": {
      "frame": "rgba(94, 132, 219, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(0, 0, 0, 0.75)",
      "bookmark_text": "rgba(94, 132, 219, 1)",
      "toolbar_field": "rgba(94, 132, 219, 1)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)",
      "tab_line": "rgba(0, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c2a51d3e-2a22-4a9a-9f98-9773b3c5a562}"
    }
  }
}