Examine source code of Ocean Blue

{
  "name": "Blue Blues",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "x-3.png"
    },
    "colors": {
      "frame": "rgba(34, 193, 204, 0.72)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(255, 255, 255, 0.32)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(17, 142, 156, 0.52)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(0, 255, 200, 0.82)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{9fccced1-1ec8-46c6-93f9-593a32099352}"
    }
  }
}