Examine source code of Cappy

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#131414",
      "tab_background_text": "#47f6ff"
    }
  },
  "version": "2.0",
  "name": "Cappy",
  "manifest_version": 2,
  "description": "I like Cappy so here he be.\nOf course I don't own him, that honor goes to Nintendo, but I wanted to have a theme of him. Might edit this later to have a better feel to it, but I highly doubt anyone is going to use this anyway haha."
}