Examine source code of Blue Ocean

{
  "name": "Blue Ocean",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "ae.jpg"
    },
    "colors": {
      "frame": "rgba(34, 89, 209, 1)",
      "tab_background_text": "rgba(92, 92, 92, 1)",
      "toolbar": "rgba(64, 177, 194, 1)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(65, 49, 245, 1)",
      "toolbar_field_text": "rgba(13, 146, 255, 1)",
      "tab_line": "rgba(78, 194, 190, 1)"
    }
  }
}