Examine source code of Red Checkerboard

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#de2157",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Red Checkerboard",
  "manifest_version": 2,
  "description": "Played around with The Gimp and came up with some nice and calm patterns.\n\nIt's some kind of checkerboard.\n\nAnd this theme comes in 5 different flavors. Check my profile for the other themes."
}