Examine source code of Katze Kittycat Blumen

{
  "theme": {
    "images": {
      "theme_frame": "kittycat_blumen1_k.jpg"
    },
    "colors": {
      "frame": "#d181b1",
      "tab_background_text": "#3905f7"
    }
  },
  "version": "2.0",
  "name": "Katze Kittycat Blumen",
  "manifest_version": 2,
  "description": "Katze Kittycat hängt im Frühling an Blumen/Cat Kittycat hanging on flowers in spring"
}