Examine source code of A-new-hope

{
  "theme": {
    "images": {
      "theme_frame": "A-new-hope-header.png"
    },
    "colors": {
      "frame": "#1c1b1b",
      "tab_background_text": "#d7d7d7"
    }
  },
  "version": "2.0",
  "name": "A-new-hope",
  "manifest_version": 2,
  "description": "really good with A-New-Hope gtk theme by jurialmunkey\n<a href=\"https://outgoing.prod.mozaws.net/v1/5be10007a48e3b361948fcb65286f2a041cbea1a1f20a0dc678264b8a78c15e9/http%3A//jurialmunkey.deviantart.com/%23/d316eqx\" rel=\"nofollow\">http://jurialmunkey.deviantart.com/#/d316eqx</a>"
}