Examine source code of Aged Hulk Theme

{
  "name": "Hulk Theme",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "HuLKIMG_3526(1).jpg"
    },
    "colors": {
      "frame": "rgba(43, 184, 76, 1)",
      "tab_background_text": "rgba(125, 179, 141, 1)",
      "toolbar": "rgba(26, 89, 38, 1)",
      "bookmark_text": "rgba(180, 119, 209, 1)",
      "toolbar_field": "rgba(36, 4, 51, 1)",
      "toolbar_field_text": "rgba(80, 140, 82, 1)",
      "tab_line": "rgba(38, 179, 68, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f02cd486-1e15-4f74-8c02-512a70d064a8}"
    }
  }
}