Examine source code of Spring...

{
  "theme": {
    "images": {
      "theme_frame": "header.jpg"
    },
    "colors": {
      "frame": "#56b6de",
      "tab_background_text": "#fcfcfc"
    }
  },
  "version": "2.0",
  "name": "Spring...",
  "manifest_version": 2,
  "description": "Springtime, cherry blossoms, apple blossoms, pink and white blossoms, blue skies\n\nchild friendly persona\n\nPersonas by LisaAtTheBeach"
}