Examine source code of Fisheye Placebo

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#166957",
      "tab_background_text": "#bbe9fa"
    }
  },
  "version": "2.0",
  "name": "Fisheye Placebo",
  "manifest_version": 2,
  "description": "A theme for the manhwa \"Fisheye Placebo by Yan Wenqing\"\nThe artwork isn't mine. I just love the manhwa and wanted a theme to go with my desktop backgrounds. ^_^"
}