Examine source code of Red evening sun.

{
  "theme": {
    "images": {
      "theme_frame": "1109-mt-yasasihikari--295sun.jpg"
    },
    "colors": {
      "frame": "#faf2f0",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Red evening sun.",
  "manifest_version": 2,
  "description": "夕陽はしずかに。。"
}