Examine source code of Arrow

{
  "name": "Arrow",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "rgba(12, 12, 12, 1)",
      "tab_background_text": "#d4d2d2",
      "toolbar": "rgba(245, 245, 245, 0.09)",
      "toolbar_field": "rgba(0, 0, 0, 0)",
      "toolbar_field_text": "rgba(255, 250, 250, 1)"
    }
  }
}