Examine source code of b1a4-Photo

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#f5f0e2",
      "tab_background_text": "#94633b"
    }
  },
  "version": "2.0",
  "name": "b1a4-Photo",
  "manifest_version": 2
}