Examine source code of Gothic Crows

{
  "theme": {
    "images": {
      "theme_frame": "CrowsHeader.JPG"
    },
    "colors": {
      "frame": "#a11515",
      "tab_background_text": "#f22424"
    }
  },
  "version": "2.0",
  "name": "Gothic Crows",
  "manifest_version": 2,
  "description": "Gothic-style crows in white on a black background"
}