Examine source code of Kitten Theme

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#070808",
      "tab_background_text": "#03ff46"
    }
  },
  "version": "2.0",
  "name": "Kitten Theme",
  "manifest_version": 2,
  "description": "This theme is for people that like cats and kittens. I made it on,\"Paint\"."
}