Examine source code of Sir Squarepants

{
  "theme": {
    "images": {
      "theme_frame": "spongebob-header3.JPG"
    },
    "colors": {
      "frame": "#0b309e",
      "tab_background_text": "#0b309e"
    }
  },
  "version": "2.0",
  "name": "Sir Squarepants",
  "manifest_version": 2,
  "description": "A bright cheery design, featuring the cast of Spongebob Squarepants!!  :)"
}