Examine source code of Plum to yellow

{
  "theme": {
    "images": {
      "theme_frame": "plumyellow.jpg"
    },
    "colors": {
      "frame": "#fa9393",
      "tab_background_text": "#fa9393"
    }
  },
  "version": "2.0",
  "name": "Plum to yellow",
  "manifest_version": 2,
  "description": "Plum to yellow , delicious colour"
}